Former Everton midfielder Steven Pienaar is training with Sunderland in the hope of securing a contract under newly-appointed boss David Moyes.
PA Sport understands that the 34-year-old, who was released by the Toffees this summer, is keen to prove his fitness and a permanent deal could see him reunite with his former manager at the Stadium of Light.
Moyes signed Pienaar from Borussia Dortmund in 2008 and the South African would go on to score 25 goals in 230 appearances during two spells on Merseyside.
However, injuries severely disrupted the final 18 months of his time at Everton and the South African is now looking to rebuild his career.
The former Ajax Amsterdam and Tottenham Hotspur midfielder could become the Black Cats' first summer signing, with former Aston Villa midfielder Charles N'Zogbia also on trial with the club.