Sunderland boss Sam Allardyce has revealed the Black Cats plan to sign more players before the January transfer window closes.

Sunderland currently sit in second-last place on the Premier League ladder and Allardyce claims he and his staff have been working tirelessly around the clock in order to bring in players who will hope steer the club away from relegation.

The Wearside club have already landed German defender Jan Kirchhoff from Bayern Munich as well as Senegalese striker Dame N'Doye on loan from Trabzonspor but Allardyce insists there will be more arrivals at the Stadium of Light.

"Games are running out," Allardyce said.

"So until the window shuts, it's my job to try to strengthen the side. If I can increase the quality it gives us a better chance of getting out of trouble.

"We have games from across Europe on our database and we can call up any player in any game he's played this season and watch it. Then we go and see them live.

"At the moment we're making final judgment calls. But this transfer window's a horrid time – and even worse when you're in our position and have to find players to help you escape the bottom three."