Source: Eurosport
Zhirkov worry for Blues
Chelsea are likely to be without new signing Yuri Zhirkov for the trip to Sunderland.
Zhirkov is still struggling with a knee injury while full-back Juliano Belletti (Achilles) and defender Alex (groin) are also expected to miss out.
Midfielder Joe Cole and right-back Paulo Ferreira are back in training but not considered match fit enough to be considered.
