The midfielder was one of the more surprising inclusions in Gareth Southgate’s England squad named on Thursday afternoon, with just four senior international caps to his name to date and having dropped down to the Under-21s for the recent September round of matches.

However, Potter believes the 22-year-old will be determined to force his way into Southgate’s side during the tournament and make an impression on the field with a global audience watching.

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‘It’s a wonderful experience for him and a wonderful opportunity,’ said Potter. ‘I know he’ll grasp it with everything he has and make the most of it. He’ll definitely come back better for it.

‘I don’t think he’ll say he’s surprised [at the call-up] because he’ll have belief in himself and his ability but he also has a humility where he knows it’s the England squad and it’s the World Cup.

‘There’s always a part of you that thinks “wow I’m in that”, and I think that’s nice. That’s what they do really well here in the Academy in terms of producing not just top footballers but good people.’

Gallagher was at Cobham when he heard the news that he was part of the 26-man Three Lions squad, though Potter admitted it was not until Friday that he caught up with the Chelsea Academy graduate to offer a proper congratulations.

‘I didn’t see him immediately, only briefly as he was coming out [for training], so I missed him a little bit,’ he continued. ‘I’m going to catch up with him in detail but I just left him.

‘I think he had loads of commercial stuff to do and loads of people to speak to - I was the last person he wanted to talk to after getting an England call-up!’

Potter went on to assess Gallagher’s start to the season at club level and the form that has earned him a World Cup call-up, pinpointing his goalscoring threat as particularly important even if the final finish hasn’t quite been there for him to add to his one goal this term.

‘He’s very quiet but I must say a really impressive young man in terms of how he deals with things, how he conducts himself and how he trains and gives his best all the time,’ he added.

‘You can see how he plays the game full of intensity, he can make things happen and he has a knack of finding solutions on the pitch, so I’ve really enjoyed working with him.

‘In another world he might have had a few goals for us because he’s had some good goalscoring opportunities. It’s sometimes the most difficult thing to get there but he does and could have had five Premier League goals.

‘There won’t be a problem from him in terms of if he’s selected or not, which is also important if you’re in a group and a squad, but he has the quality to help.’