Manchester United title winner Dimitar Berbatov believes big changes are due once Cristiano Ronaldo arrives.
The Juventus striker is in the process of finalising his return to Old Trafford.
Berbatov is particularly worried for Frenchman Anthony Martial.
The Bulgarian told Betfair: "Where Ronaldo fits into the United side is the question I asked myself because we have Martial, Rashford, [Jadon] Sancho and Cavani so there are a lot of attacking options.
"I actually think Martial is going to have a big question mark over his head and I'm probably more concerned about that.
"I think Greenwood is in a good position right now.
"He's the future of the team for sure and he's someone who could definitely be given more playing time because for me he's a natural finisher.
"He can only get better as long as he plays and I don't think his place is in question.
"Rashford is someone who also is born and bred in Manchester and I think he'll be fine and Cavani also has his place and that's why I'm curious to see how Ole's going to rotate everyone."
Need a VPN? Or seeking to switch? Then support Tribal Football by clicking here to sign up with our official partners NordVPN. Not only will you receive the best VPN experience, but also great discounts by signing up via Tribal Football. Thanks for your support!