Romeo Lavia was officially unveiled as the newest recruit to Mauricio Pochettino’s Chelsea squad this morning, joining from Southampton to further strengthen our head coach’s midfield options, following the arrival of Moises Caicedo from Brighton earlier in the week.

• The latest injury update ahead of Sunday's game

• Lavia on the chance to work with Pochettino

• How to follow West Ham vs Chelsea live

Speaking to the media ahead of Sunday’s away trip to West Ham, Pochettino made it clear he is excited by the way his squad is taking shape for this season, with plenty of praise for the work done by the club in this summer’s transfer window.

‘We all know Romeo and his quality, his profile,’ said our head coach. ‘I think he’s a perfect player for this project. We are excited and we are so happy to add him in the squad.

‘The club worked really hard on these signings. We have to congratulate the owners and the sporting directors Laurence [Stewart] and Paul [Winstanley], because the job was amazing. To add these types of players like Moises and Romeo, and all the previous signings, is fantastic for the club.

‘We need to congratulate the job that they are doing, the owners and sporting directors, because it has been fantastic. These types of players, with the quality that they have, in this squad and this project, I think it’s an amazing thing. It’s a very exciting moment and situation for the club.’

Pochettino also considered the chances of Caicedo or Lavia being included in his line-up straightaway for Sunday’s match in east London, but won’t be taking any chances with their introduction to the team.

‘I think we need to assess them,’ he added. ‘We have one day more to asses them but it has been a very stressful week for Moises and Romeo.

‘It’s easy to say they will be involved Sunday in the game but I think the most important thing is to avoid risks and not to rush with them. If they are ready by tomorrow they will be involved. If not we are going to wait a few more days to be fully involved in the squad.’

One player who will definitely not be on the pitch at West Ham is Reece James, after the Blues skipper was forced off with an injury in our Premier League opener against Liverpool last week.

‘It is a sad moment because he’s our captain and he was so excited to be our captain and he was full of energy. We are going to assess him day by day. For sure he wants to be again with the team as soon as possible and for sure he’s going to become stronger than he was, because with all the effort of the club we are going to help him to become stronger than before.

‘It’s a hamstring injury. It’s not about a few days, maybe a few weeks. The good thing is it’s not a big issue, but the most important thing now is to work really hard to try to anticipate problems and to be sure that when he starts to play again he is fully fit and stronger than he was before. That is the most important thing. That is why we are going to assess him day by day and try to make the plan every day.’

James is not the only Chelsea player currently in the treatment room and Pochettino was asked whether injuries might lead to further new signings for the club before the end of the transfer window.

However, while our head coach isn't ruling anything out, he used the example of Christopher Nkunku, who is currently missing after picking up an injury in pre-season, to explain why it isn’t necessarily always best to look outside of the current squad for potential replacements.

‘We are working of course, seeing all the options that we can manage on the market. I think all the clubs are doing the same as us. But I think at the same time we are keeping one or two eyes on Armando Broja because we cannot forget him and we cannot stop him by bringing in some profile of player that can stop him.

‘We really believe in him, we know him very well and he can be an important striker for Chelsea and we need to be careful. We are a bit disappointed with the situation of Christoph because he should be a very important player for us, helping Nico Jackson to score goals. But that is football and we need to accept that situation.

‘At the same time we cannot go for some player that maybe after is not a player that we have. Maybe we need to be patient and try to adapt our squad to try to get positive results, waiting for Armando to be fully fit.’