Manchester United are not willing to commit to a deal for Colombian international striker Radamel Falcao until the player has better proven his fitness, as reported by the Daily Star.

Falcao’s arrival from Monaco on loan was widely heralded as an exceptional addition by the Old Trafford side, but he has struggled to make an impact since his move on deadline day.

The former Atletico Madrid man has been hampered by injuries, with recurring problems stopping him from playing regular first team football.

This is a worry for Man Utd, who brought Falcao in knowing that he had suffered a significant knee injury last season, and with little evidence that he had fully recovered from that.

While Man Utd have already agreed a future fee of £44 million for the player, they will judge Falcao over the next two months before deciding whether to commit to a permanent deal for the expensive but talented striker.

Radamel Falcao has declared his desire to stay at Manchester United on a permanent basis, having scored his first goal for the Old Trafford club against Everton at the weekend, as reported by the Daily Star.

The Colombian international made a deadline day switch to Man Utd, although it was only on loan.

He has finally made the impact that was expected of him, scoring the important winner against the Toffees yesterday.

It has already been confirmed that Falcao will spend the rest of season on loan with the Premier League giants, but Man Utd can make transfer permanent with a £43 million move, as agreed in the loan switch.

However, Falcao confirmed after his goal yesterday that he already wants to confirm a long term future with the Manchester side.

He said: “Me and my family are very happy here and we want to stay for many years at Manchester United.

“I’ve had a great welcome. When you’re surrounded by quality players it makes settling in more easy.

“This is a big challenge for my career. I always dreamed about being at Manchester United.”

There were suggestions at the weekend that the club and Falcao have already agreed terms to make the move permanent at the culmination of the season.