Wesley Fofana, Cole Palmer and Omari Kellyman have withdrawn from international duty this month after being called up by France, England and England Under-20s respectively. Fofana and Palmer will instead focus on their fitness at Cobham, while Kellyman has suffered a hamstring injury.

However, there are plenty of Blues set to be in action across the world, including no fewer than 13 of Enzo Maresca's senior squad.

Here is all the info you need on who has been selected and when they will be in action during the September international break. The below list is subject to change due to potential injuries and illness.

UEFA Nations League

England: Levi Colwill, Noni Madueke

Madueke received his first senior call-up by interim manager Lee Carsley as a new era begins for the Three Lions after Gareth Southgate's departure.

Both players know Carsley well having been part of the England Under-21 squad he guided to the Under-21 Euro title in the summer of 2023.

Carsley's reign begins with the Nations League opener away in Dublin against the Republic of Ireland at 5pm BST on Saturday 7 September before hosting Finland at Wembley Stadium at 7.45pm BST on Tuesday 10 September.

Portugal: Joao Felix, Pedro Neto, Renato Veiga

Summer signing Veiga is another in line for his senior international debut after getting his first summons from Portugal boss Roberto Martinez for this month’s Nations League fixtures.

The 2019 champions begin their campaign against Croatia at 7.45pm BST on Thursday 5 September before hosting Scotland at the same time three days later.

Both matches will be played at the Estadio da Luz in Lisbon.

Spain: Robert Sanchez, Marc Cucurella

Spain and Cucurella will look to pick up where they left off after their brilliant Euro 2024 triumph in the summer – and they will this time be joined by the returning Sanchez.

Back-to-back away games see La Roja taking on Serbia at 7.45pm BST on Thursday 5 September and Switzerland at the same time on Sunday 8 September.

Ukraine: Mykhailo Mudryk

The Ukrainians have a double-header of Nations League matches in Prague. The first, officially a home fixture, is against Albania at 7.45pm BST on Saturday 7 September at the EPET Arena in Prague.

Ukraine are then are classed as the visitors when they play Czechia in the same city on Tuesday 10 September, this time across the capital at the Fortuna Arena.

World Cup qualifying

Argentina: Enzo Fernandez

With a third of the South American qualifying matches already played, world champions Argentina are clear favourites to secure a spot at the 2026 World Cup, sitting two points clear at the top of the table with five wins out of six.

They will hope to continue that good form at home against struggling Chile in the early hours of Friday 6 September (kick-off 1am BST) before a crucial game away to Colombia – currently three points behind in third – at 11.30pm BST on Tuesday 10 September.

Brazil: Estevao Willian

The young winger, who will join Chelsea next summer, has received his first senior call-up for a Brazil side looking to recover from a shaky start in qualifying.

They currently occupy the sixth and final automatic qualification spot.

They have two vital fixtures, first against Ecuador (2am BST on Saturday 7 September) who are currently one point ahead in fifth before travelling to Paraguay (1.30am BST on Wednesday 11 September) who sit one point behind in seventh.

Ecuador: Moises Caicedo, Kendry Paez

The Ecuadorian duo will come up against their future Chelsea team-mate Estevao in Brazil in the early hours of Saturday 7 September, bidding to stay on course for qualification despite a three-point deduction.

They then travel back to Quito to host bottom-placed Peru at 10pm BST on Tuesday 10 September.

Africa Cup of Nations qualifying

Senegal: Nicolas Jackson

The group stage of qualifying for next year’s Africa Cup of Nations in Morocco gets underway this month.

Senegal begin their campaign at home against Burkina Faso at 8pm BST on Friday 6 September, and then away in Burundi at 2pm BST on Monday 9 September.

European Under-21 Championship qualifying

Belgium Under-21s: Mike Penders

The young goalkeeper, who joins Chelsea next summer, helps Belgium kick off their qualifying campaign away against Kazakhstan at 3pm BST on Tuesday 10 September.

Denmark Under-21s: Filip Jorgensen

Summer signing Jorgensen is in the squad to face Iceland away at 4pm BST on Friday 6 September before hosting Czechia at 5pm BST on Tuesday 10 September.

Finland Under-21s: Lucas Bergstrom

Yet another Chelsea goalkeeper in Under-21s qualifying action, Bergstrom and Finland open their campaign in Armenia at 5pm BST on Friday 6 September and then face Romania on home soil at 4pm BST on Tuesday 10 September.

Youth internationals

Brazil Under-20s: Deivid Washington

The forward will take part in a training camp and a pair of home friendlies against Mexico on Thursday 5 September and Sunday 8 September as Brazil prepare for this winter’s Under-20 Copa America.

England Under-19s: Josh Acheampong, Reiss Denny, Kiano Dyer, Tyrique George, Harrison Murray-Campbell, Ishe Samuels-Smith

No less than six Blues will be involved in a three-game friendly tournament in Croatia, playing Italy (4pm BST on Wednesday 4 September), the hosts (3.45pm on Saturday 7 September) and Germany (3.30pm BST on Tuesday 10 September).

Portugal Under-19s: Leo Cardoso

Portugal compete in the Stevan Vilotic Memorial Tournament in Belgrade this month, taking on Montengro (4.30pm BST on Thursday 5 September), Hungary (4.30pm BST on Saturday 7 September) and hosts Serbia (5pm BST on Tuesday 10 September).

Republic of Ireland Under-19s: Harry McGlinchey

Three games in Slovenia see the Irish face France (4pm BST on Thursday 5 September), Kazakhstan (4pm BST on Saturday 7 September) and Slovenia (9.30am BST on Tuesday 10 September).

Scotland Under-19s: Harrison McMahon

During a trio of friendly matches in Spain, the Scottish will take on Azerbaijan (6pm BST on Wednesday 4 September), the Faroe Islands (4pm BST on Friday 6 September) and the Netherlands (6pm BST on Monday 9 September).

England Under-18s: Ollie Harrison, Shumaira Mheuka

The Young Lions head to Limoges in western France for the four-team Lafarge International Tournament.

They will take on Portugal (2pm BST on Wednesday 4 September), Switzerland (2pm BST on Friday 6 September) and finally home side France (5pm BST on Sunday 8 September).

USA Under-17s: Landon Emenalo

The USA youngsters are in Europe this month for the friendly Vaclav Jezek Tournament. They will play the Under-18s sides of Germany (4pm BST on Wednesday 4 September), Czechia (4pm BST on Friday 6 September) and Slovakia (1pm BST on Sunday 8 September).