Everton manager Roberto Martinez believes Ross Barkley's burgeoning reputation will see him become internationally recognised this summer, but has urged the midfielder to remain at the club next season.
20-year-old Barkley has seen his scintillating campaign at Goodison Park rewarded with a spot in Roy Hodgson's World Cup squad with many calling for him to have a key role in the England set up.
Barkley's rise on the blue half with Merseyside ahead of an international tournament has inevitably drawn comparisons with Wayne Rooney, who enjoyed a breakout campaign for Everton in 2004 before starring for England at the European Championships and earning a move to Manchester United later that summer.
Barkley has been linked with taking a similar path to Old Trafford but his manager believes the prodigious midfielder must remain at Everton.
"It would be wrong for him (to leave this summer)," Martinez said.
"I always feel as manager you develop a relationship with players and you're always honest with that.
"Ross is a phenomenal talent - probably the best English talent I have ever seen - but he is not the finished article yet.
"In football obviously you can never speak about the future. Obviously we need to come along and try to get into the top-four positions to offer players like Ross the next stage of their development.
"Ross is delighted at Everton and feels very much that he is in the right place at the right time of his career."
Barkley's rise during the 2013/14 season has seen him become a household name amongst Premier League viewers but Martinez predicts his profile will soon become globally recognised should he shine in Brazil.
While such exposure has had the tendency to work to the detriment of young stars, Martinez has no worries of Barkley's attitude changing of the course of the summer.
"He's playing at a World Cup and he could be in a position to impress millions, never mind just the people in England," he said.
"That's the type of tournament we are talking of. But Ross will never look at it in that way. He will look at it and try to be as good as he can to help England.
"Ross will come back the same person - I can guarantee you that.
"He's not someone who will lose sight of realism when he comes back. For us he's a star whatever happens in the World Cup. He is ready now to fulfil whatever role the England manager wants to give him."