Could a front-two combination of Wilson Isidor and Eliezer Mayenda work wonders at Sunderland?

Mayenda impressed with his double against Sheffield Wednesday last time out but faces a tough task to break into the starting line-up given boss Regis Le Bris' favoured 4-3-3 formation.

"They are both quick, they play on the shoulder - they are a nightmare for centre-backs," former Black Cats defender Danny Collins told BBC Radio Sunderland.

The Wearsiders next host relegation-threatened Cardiff City on Saturday, before welcoming Preston North End three days later.

But with the Bluebirds facing Sunderland's promotion rivals Burnley on Tuesday while the Black Cats enjoy a midweek free of competitive football, Collins thinks the weekend might be the perfect time to try out a 4-4-2 line-up.