Gibbs with a deep gash, got stitches. Should be ok to play so long as he's not a pussy.
Ramsey picked up a knock on his ankle, "a knock" could mean anything though.
Rosicky picked up a knock too.
Sagna has "a problem" after his fall.
(source for above, official arsenal)
Twitter rumours of Ox doing his cruciate, nothing remotely official though.
(Chambo rumour, not credible)