Former Manchester United striker Dimitar Berbatov thinks the club were too hasty in selling attackers this summer.

He also believes that a move for Mario Mandzukic from Juventus in January is a good option.

United sold Romelu Lukaku to Inter Milan, while they also allowed Alexis Sanchez to leave on loan to the same club.

Marouane Fellaini was moved on last January, despite him often being an option off the bench when United needed a late goal.

Speaking about United's present attacking situation, Berbatov told Betfair: "When you sell two of your main strikers you need to bring in at least one, just in case.

"Everybody can see that that Manchester United need a back up, (Anthony) Martial is injured and there isn't another really strong proven goalscorer.

"They have the talent in the young players but at the same time you need someone like Mandzukic.

"I think he is a really good football player and he hasn't played before in England but I hope if he comes he can straight away get into the rhythm of the Premier League."