Fabregas completed his move from the Gunners to Spanish giants Barcelona on Monday.
Ramsey told Sky Sports: “It’s time to move on. He was a great player for the club but now he’s gone.
“We just have to concentrate on what we’ve got here. We believe the squad we’ve got is very talented and we can achieve something this season.
“Hopefully we can carry on from where we’ve left off tonight, and keep getting positive results.”