On Arnautovic's condition, the West Ham boss added: "We will see during the week". As it is with London derbies, it is a game that has goals written all over it.
Wilshere is looking to relaunch his career at West Ham after several injury-hit campaigns with Arsenal, and Pellegrini believes the Brit can be compared to the former Juventus and Milan playmaker.
"We were unlucky to concede an own goal that put Arsenal on top".
After just nine minutes though, Wilshere angered fans on Twitter after a cynical foul on the man who seemingly took his place in the Arsenal set-up.
Frank de Boer lost all four of his games in charge of Crystal Palace at the start of last season before being sacked after just 77 days in the job, the Eagles failing to score in that time.
Occupied the left side of the West Ham midfield and was a constant threat to the likes of Bellerin but did not create enough for his side to win the game.
Pellegrini then wrapped up his talk about team news by admitting that there will be changes from last weekends second-half disaster against Bournemouth, although is staying tight-lipped about potential starters, saying only: "Maybe against Arsenal I can make some changes because I think the players played bad".
Picked up a goal and came close to scoring twice with his five shots as he repaid the faith shown in him by the manager.
Monreal made light of an earlier knock to slam home the equaliser when West Ham failed to clear Hector Bellerin's cross.
With just nine touches of the ball all game, the Ukrainian global was often idle in the midfield and did not provide enough steel or width to the West Ham midfield.
The Hammers grew into the contest and attacked a nervy Arsenal defence at any given opportunity.
Should have done better late in the game after being set up by Anderson but that was his biggest involvement, coming off the bench.