Arsenal defender Pablo Mari returned from injury with the Under-23s last night.
The Spanish centre-back played the first 45 minutes in the 3-1 win over Derby after not being seen in a senior game since June.
Mari has been recovering from a knee injury.
In the first game of Project Restart, Mari, who was on loan from Flamengo at the time, picked up an injury during Arsenal's 3-0 defeat away to Manchester City.
The North Londoners have since made the move permanent despite him being unavailable, until now.
