Joel Campbell

The on-loan Arsenal star joined the Gunners back in August 2011 - but is yet to make an appearance for Arsene Wenger's side. 

Campbell, who can play in midfield or as a striker, has been shipped out to Lorient, Real Betis and Olympiakos since joining Arsenal for an undisclosed fee. 

The 21-year-old has scored five goals in 14 games in the Greek Super League so far this season - with Campbell often playing off the right wing. 

Campbell could further adhere himself to the Arsenal faithful if he can help Olympiakos knock Manchester United out. 

UEFA Champions League