Former Manchester United midfielders Paul Scholes and Owen Hargreaves believe there are still question marks over what is Marcus Rashford's best position following his poor performance against Southampton on Saturday.
The 21-year-old started the season on fire with two goals and an assist in United's open two games against Chelsea and Wolves .
Since then, however, he has struggled to make an impact, and received criticism for his role in the disappointing 1-1 draw against the Saints.
Speaking to Premier League Productions, Hargreaves said he has has doubts over whether Rashford can fill the forward void left by the summer departure of Romelu Lukaku to Inter Milan.
"It’s a shame because I love him as a player, I think he’s terrific, but they [United] need a No.9," Hargreaves said.
"Sanchez has gone, Lukaku has gone, they needed him to step up. Martial has really taken the No.9 shirt and been great.
"Rashford had a chance [against Southampton] and he didn’t take it. Is he going to be a No.9, is he going to play off the left? He didn’t capitalise."
United legend Scholes was in agreement with Hargreaves, and thinks Rashford needs to establish exactly what type of player he really is.
Scholes added: "I think that’s the big question – what actually is he? And it’s the same with Greenwood, Martial, he’s similar.
"On that performance [against Southampton] he just didn’t look like a centre-forward. I don’t think you can judge it on one performance, he hasn’t played there a lot. He looks like the scorer of great goals rather than a great goalscorer to me."
Rashford is currently on international duty with England, where he will hope to add to his seven goals for the national team when Gareth Southgate's side take on Bulgaria and Kosovo in the Euro 2020 qualifiers.
