Renato Sanches
Sanches linked with huge move to Old Trafford but Benfica are not worried by the speculation. Getty

Benfica have no concerns over a possible bid from Manchester United for midfielder Renato Sanches. Sanches, 18, has enjoyed a remarkable breakout season for the Portuguese giants, forcing his way his way into the first team and winning admirers across Europe.

According to local newspaper O Jogo, United have made an initial offer of €30m (£22.6m, $32.6m) for the midfielder that could possibly rise to €40m with add-ons. Benfica boss Rui Vitoria is unconcerned by the ongoing speculation, however.

"Renato is mature beyond his age," Vitoria told SportTV, ESPN reports. "He is being protected by a group of players who support him and are giving him a lot of help. This situation is not difficult for us. If things happen, they happen. We all know that's the way it is. There is no point in worrying over things that have yet to happen.

"There is no drama about all this. The team is very stable and that helps dealing with speculation like this."

United's efforts to secure the services of the talented Sanches are now likely to wait until the summer. with just hours of the January transfer window remaining. The club's only incoming business during the winter window have been the returns of Adnan Januzaj and Will Keane from respective loan spells at Borussia Dortmund and Preston North End respectively

Louis van Gaal was keen to bring in another full-back to provide cover for the injured options of Luke Shaw, Antonio Valencia and Marcos Rojo. But the emergence of Cameron Borthwick-Jackson appears to have quelled such plans.

The club's January business has largely been limited to members of the Under-21 squad leaving for loan moves. Nick Powell, who was briefly part of Van Gaal's first-team plans after returning from injury in November, could be another late departure with a loan move to Hull City close.