Sunderland are reportedly now in a fight with a number of their rivals in the Championship to sign Bradley Dack.

The Lowdown: Out of contract

Dack is a player that is out of contract in the summer, meaning that he can leave as a free agent once it expires.

The Blackburn Rovers attacking midfielder could also be available for a cut-price in the January transfer window, should they decide to cash in at the risk of losing him for free.

The Latest: Sunderland interest

As per Football League World, the Stadium of Light outfit are interested in signing Dack, but are waiting to see what Rovers' stance on him given his contract situation.

However, they will face competition from fellow Championship rivals Millwall and Luton Town for his signature.

The Verdict: Wait until summer

Given that the Wearside club are sitting comfortably in midtable, they may not need too many reinforcements come the January transfer window.

With Dack's contract up in the summer, they could sign him for free then, which would represent a great piece of business.

The 28-year-old has scored an impressive 91 goals in his senior club career from midfield, and 50 of those came under former Rovers manager Tony Mowbray, of course now at the Black Cats.

Once dubbed 'amazing to watch' by Mowbray himself, he will know how to get the best out of Dack, and so reuniting him with his old boss seems like a smart move, especially if no transfer fee is involved.