Jose Mourinho fears Manchester United may have created more problems for themselves following the imminent arrival of Jadon Sancho.
The Red Devils have long chased the Borussia Dortmund star and will soon announce the £72.9m signing of the winger.
Sancho will join a squad already filled with attacking talent as he looks to establish himself at Old Trafford.
Ole Gunnar Solskjaer was able to convince Edinson Cavani to remain in Manchester for a further year.
The Uruguayan's attacking colleagues include Mason Greenwood, Marcus Rashford and Anthony Martial which may lead people to question where Sancho fits in.
Having so many impressive weapons going forward is certainly a nice problem for Solskjaer to have.
Mourinho though is wondering how they will all be kept happy as he questioned the amount of game time each player will enjoy.
"Mason Greenwood was not in the Euros squad but could be there at the next World Cup," he told The Times.
"When he will be much more mature. He has the talent, but it may depend on what happens at his club.
"At Manchester United they have Jadon Sancho, Marcus Rashford and Greenwood. If one has an amazing season, does that mean another is not starting so many matches?
"With Bukayo Saka, he will be an even more fundamental player for Arsenal, but in what position? I like a left-footer on the right wing but Arsenal have other choices such as Willian and Nicolas Pépé, so only Mikel Arteta, the manager, knows how Saka is going to play.
"I hope the coaches of the best teams with the best talents look to the national team as if it’s my football, the country where I work, and give chances to the young guys, because United have great kids and so do Arsenal, Chelsea and many clubs.
"England is producing at academy level in a way that is so much better than when I arrived in 2004."
United finished second last term and are looking to close the gap on rivals and champions Manchester City.
A centre-half and a central midfielder are both areas Solskjaer wants to strengthen, with Real Madrid's Raphael Varane a genuine target.
Starting slow cost United last term and he has challenged his players to begin with a bang once the season begins.
He said: “We all need to start on the front foot and kick off at the right tempo because, when the season starts, we know how little can decide the season being a successful one or not so successful.
“We’ve got to look at pre-season and start the season better than we did last season.
“We gave ourselves a mountain to climb as it was a difficult start. Hopefully, this year, we’ve cracked the gradual improvement.
“It's building and improving. Of course we need to improve on a few things."
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