The Black Cats are currently sitting in the bottom three with 13 games remaining.
The winger scored in his side's 2-0 win over Bournemouth on Sunday.
The Greek international failed to score in three appearances for The Cottagers.
Newcastle United have a new striker in their ranks.
Gary Rowett's men's next game is an away trip to managerless Rotherham United.
The Argentine was sent off 25 minutes into his return from Tottenham Hotspur.
The Manchester United youngster has not been a regular goalscorer on previous loan moves to the Championship.
Liverpool and West Ham United go head-to-head this week.
The Frenchman says the club have finally managed to replace Yohan Cabaye.
Pep Guardiola has brought on the Austrian international leaps and bounds at the Allianz Arena.
An experienced, well-educated friend of mine has been looking for a job for close to six months, and I’ve been helping her with feedback on her CV.
A week on, the ripples are still spreading through English cricket, running outwards from Cape Town, their progress unchecked even by the team’s underwhelming performance in the final three days of the second Test.