Gunners keep an eye on Gallas

Arsenal defender William Gallas is rated as only 50/50 because of an eye problem for Sunday’s Barclays Premier League clash with leaders Chelsea at Emirates Stadium, but full-back Kieran Gibbs is out following an operation on his foot.

Veteran Mikael Silvestre is on stand-by to fill in at centre-half, while Armand Traore should fill in on the left following Gibbs’ injury.