The Arsenal manager was taken aback by Tony Pulis's Crystal Palace departure.
Tottenham Hotspur beat London neighbours West Ham United at Upton Park this afternoon, as new signing Eric Dier grabbed an injury time winner.
Wayne Rooney scored a fine overhead kick to net the first competitive goal of Louis van Gaal's Manchester United reign.
Here is how Arsenal and Crystal Palace will line-up for this evening's match at the Emirates Stadium...
Jordy Clasie is set to join FC Porto from Feyenoord this weekend.
Aiden McGeady opened the scoring for Everton against Leicester City on Saturday with a finely taken goal.
The football presenter has ramped up the pressure on Louis van Gaal.
Manchester United's Luke Shaw has been ruled out for at least a month with a hamstring injury – which could be great news for Kieran Gibbs.
Swansea City defeated Manchester United 2-1 at Old Trafford on Saturday lunch-time.
Arsenal captain Mikel Arteta has been speaking about the club's young players.