That is the view of Sky Sports pundit Charlie Nicholas.
Rashford has struggled for game time at Manchester United under Jose Mourinho this season.
The stunning form of Zlatan Ibrahimovic – who has bagged 20 goals for the season already – means he has been shunted out wide by the United boss.
Mourinho hinted today he would ring the changes for their Europa League clash.
Man United stars joke around in training ahead of Saint-Eteinne clash
Wed, February 15, 2017
The Manchester United squad looked in a relaxed mood as they trained ahead of Thursday's Europa League clash with Saint-Etienne (8.05pm), but Jose Mourinho was struggling to crack a smile
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The Manchester United squad are in high spirits prior to their Saint-Etienne tie
Charlie Nicholas reckons Marcus Rashford will start for Manchester United against Saint Etienne
Marcus Rashford has endured a difficult season under Jose Mourinho
And Nicholas reckons Rashford will have a chance to shine up front, with Ibrahimovic earning a much-needed rest.
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“This is an awkward one for United because Jose Mourinho is chasing the EFL Cup on February 26 and will also be keen to do well in the FA Cup," he wrote for Sky Sports.
“He will make a good few changes but while he’s got a lot of numbers in the squad there are not that many that he really trusts.
“I think Zlatan Ibrahimovic will get a rest and he’ll bring in Marcus Rashford to join Juan Mata, who has been so important recently, and give Anthony Martial another chance to impress.
Zlatan Ibrahimovic will be replaced by Marcus Rashford, according to Charlie Nicholas
“St Etienne have always had quite a strong physical side and United’s weakness this season has been their struggle to break sides down at Old Trafford.
“I think this could be another one of those frustrating nights where they always look in control but only come away with a narrow advantage.”
Rashford could find more starting opportunities come his way over the next few weeks.
United face Championship side Blackburn in the FA Cup on Sunday before travelling to France for the away leg against Saint Etienne on February 22.