The January transfer window is over week old already and there's already been plenty of activity.

Plenty of clubs in League One have already made moves to strengthen their squads ahead of the second half of the season - something which seems to be having a knock-on effect on the rest of the division.

Sunderland have shown real signs of intent as they look to bolster Phil Parkinson's squad ahead of a pivotal few months in the club's future.

The Black Cats will be hoping to secure a play-off spot at the very least this term, but based on performances in the first half of the season it'll be crucial to add to the squad.

Here are three deals that would make it the perfect transfer window for Sunderland.

The 33-year-old is free to leave Sunderland after a disagreement last month.

McGeady is among the highest earning players at the Stadium Of Light, meaning that his departure would free up the club to bring in a number of new additions.

The winger clearly doesn't want to be at the club so the best bet is to move him on as quickly as possible.

The deal that supporters will be firmly behind.

Sunderland have struggled to turn their dominance into goals at times this season - playing a huge part in the club's inability to sustain a realistic promotion push.

Will Grigg has struggled for form while Charlie Wyke has had fitness issues, meaning that the addition of a proven, in-form frontman could be just the catalyst for kicking on in the second half of the season.

It ties into the last point, but the striker has endured a torrid season so far this term.

Something is not right for the Northern Ireland striker and it seems like the best possible solution would be to try and move the striker on for the sake of both the club and the player.

Whether someone will be able to afford Grigg remains to be seen, so perhaps a loan exit with a view to a summer move would be best.