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Arsenal fans are anxious about the introduction of Andre Santos.
The big news for Arsenal is the calf injury to Kieran Gibbs.
Gibbs will miss at least the next three weeks, meaning that Arsene Wenger faces something of a dilemma about how to replace him. Against Liverpool, he turned to Andre Santos. It was a move that proved unpopular with the fans and unsuccessful on the pitch.
Wenger's other option is to play a player out of position. Bacary Sagna or Carl Jenkinson could be asked to switch to the left-hand side.
Alternatively, he could shift his captain, Thomas Vermaelen, out of his preferred centre-back position. Given Vermaelen's patchy form in the middle, this may be no bad thing.
Arsenal's other injury concern is over Mikel Arteta. The Spaniard has been absent for the last few weeks, and there will be an anxious wait to see if he is ready to face Tony Pulis' side.