New Sunderland defender Alim Ozturk has his best years ahead of him, with Jack Ross praising his 'hunger' to be a hit on Wearside.
The central defender has penned a two-year deal at the Stadium of Light, following his release from Boluspor in his homeland.
Ross worked with the 25-year-old Turkish defender when they were at Hearts together and he is confident he has the tools to be a success at Sunderland.
Ross said: "The age range is important – he came over to the UK from Holland in his early 20s, he is still only 25 so that still gives us the best years of his career ahead of him.
"He has still got a point to prove and in terms of how well he did in Scotland he probably thought that might open up a path to come to England, but he chose to go back to Turkey.
"There is a hunger about him.
"He is buzzing off the facilities and that is what we want. We want players to realise the scale of this opportunity.
"We are delighted to have him on board. For him, it is a new challenge.
"He is an intelligent young man and has some success in his career already. He has coped with the demands in his career already and I’m sure he will do the same again."
A former Turkey Under-21 international, Ozturk began his career at SC Cambuur in Holland before moving to Trabzonspor. From there he headed to the Scottish Premiership with Hearts before returning to Turkish football with Boluspor.
Ross added: "He is really comfortable on the ball and I think the supporters will see that. He is excited by the opportunity to come here and he wants to do well so that fits perfectly into what we are trying to do here moving forward."
Ozturk is Sunderland's first summer signing with the Black Cats in advanced talks with strikers Lyle Taylor and Chris Maguire and midfielder Dylan McGeouch