Mats Hummels
Hummels has had a lot of problems with injuries this seasonReuters

German centre-back Mats Hummels says that he is yet to make up his mind on whether he will be staying at Borussia Dortmund beyond this season or not.

Although the 26-year-old German still has two more years remaining on his current contract at Westfalenstadion, he has been strongly linked with a move to England, with Manchester United believed to be leading the race for his signature.

Recently, the Daily Mail claimed that United were readying a £36 million for the German, but Dortmund are reluctant to sell, insisting that Hummels is an "incredibly important player" for them.

Still Hummels has refused to rule out a move to the Premier League, saying that he still not made up his mind on his future.

"As matters stand, I think about what is good for me and what I want to do," Hummels was quoted as saying by German football newspaper Kicker. "Everyone knows that I very much like it here in Dortmund, but I also want us to have a powerful squad and a powerful approach.

"I have held many talks in recent weeks, which are relevant for me and which will form my general view. But I have not made a decision regarding my future. And even if I had, it does not necessarily mean that it can be turned into reality."

Hummels, who has had a lot of problems with persistent injuries this season, insists he will be open about whatever decision he eventually takes.

"It's not like I'm now saying that I'll leave no matter what. Whenever I make a decision, no matter which direction, I will openly talk about it."

"I am not a friend of those who superficially talk about staying put and secretly have already decided against it."

The 26-year-old feels that a move to a foreign club would be beneficial for his career and "personal development."

"Fundamentally I believe that playing abroad is good for the footballing as well as the personal development," he added.

"You can also see that when you're with the national team, and so it'll boil down to a switch abroad at some point. If I want to make the step, I would probably have to do it within the next two or three years."