The Gunners captain needed to be replaced after just 10 minutes of the round of 16 2nd leg clash versus the Rossoneri after hitting Milan protector Alessio Romagnoli.
Calum Chambers changed Koscielny as Arsenal beat the Serie A side 3-1 on the night and 5-1 on aggregate.
Arsene Wenger was pleased with his side’s screen as they verified their location in the quarter-finals of the competitors.
He stated later on: “We won the 2 video games and ended up the (2nd) video game in a persuading method versus a strong group.
” It’s constantly tough to end up the task, particularly when you have an excellent away result since you do not know a bit (exactly what’s going to occur) between.
” Maybe the favourites to win the Europa League are Atletico Madrid. Exactly what I like has no impact. We simply need to await the make use of Friday lunch break.”