Rashford scored eight goals from 18 appearances for Manchester United under Louis van Gaal last season.
But the 19-year-old has found life at Old Trafford tougher under Jose Mourinho, netting seven times from 38 games.
With Zlatan Ibrahimovic occupying the centre-forward position, Rashford has had to make do with a place on the left wing.
Alan Shearer believes Marcus Rashford faces a fight at Manchester United
Man United ace Marcus Rashford's new house
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Marcus Rashford struggled in England's 2-0 win over Lithuania
And Shearer believes a summer of change at the club could see the England international’s plight continue.
“Look at the problems Marcus Rashford is having to establish himself as a striker at Manchester United,” Shearer told The Sun.
“It won’t get any easier for him either because boss Jose Mourinho will buy more big hitters this summer.
“It seems if Rashford wants to succeed at United he will have to do it from a wide-left role, yet England are crying out for him to be playing as a striker.”
Alan Shearer believes Marcus Rashford will continue to toil under Jose Mourinho
United appear set to invest in a big-name striker at the end of the season.
Reports last week said the club are closing in on an £86million deal for Atletico Madrid forward Antoine Griezmann.
And the Red Devils have also been linked with Everton’s Romelu Lukaku.