Sunderland have reportedly added Liam Delap to their shortlist of transfer targets. The Chelsea forward is rumoured to be attracting attention ahead of the next transfer window, with insiders claiming preliminary talks could soon take place. Ipswich, Brighton and Strasbourg Alsace have not withdrawn their interest and could still influence the outcome. Sunderland's 25/26 output of 1.03 goals per game is behind league levels. The addition of Liam Delap would give them the sharper edge they're missing in front of goal. Speculation continues to connect Chelsea with Christos Tzolis, Said El Mala and Maxence Lacroix while no fresh rumours surround Sunderland. More on this story as it develops. Need more Sunderland transfer rumours? Follow @PlayerSwitchCom on Twitter for up-to-the-minute news from Sunderland.