Former Feyenoord manager Jaap Stam has hailed winger Luis Sinisterra as 'world-class' following his summer move to Leeds United.
Leeds paid £21m to sign the Colombia international from Feyenoord this summer as a replacement for Raphinha after his move to Barcelona.
Feyenoord plucked Sinisterra from Colombian side Once Caldas for €2million in the summer of 2018.
Sinisterra initially struggled to settle at Feyenoord until Stam gave him a run of games at the start of the 2019/20 season.
He then blossomed in Rotterdam and eventually earnt a move to England after 12 goals in 30 league appearances last term.
And Stam is expecting Sinisterra to grow exponentially at Elland Road, speaking to TribalFootball, on behalf of bet365.
Asked what fans should expect from Sinisterra, Stam said: "When I went to Feyenoord, I was looking for wingers as well, but at that time when I joined there wasn't a lot of money to spend, so I needed to have a look at what was in the squad already and what was in the academy.
"Luis was there, he was one of these players. At Feyenoord, people were saying to me "I'm not sure about him" and "he can't keep it up after half an hour" or "he's tired and his legs are gone". But I spoke with him, and I spoke with my other coach that I brought in, and when I looked at him, I saw a player that was very interesting, and had a lot of potential. That's why I gave him the confidence when he was there to play for me as winger. Immediately you could see what he could bring to the game.
"Using his pace, his 1v1s, his scoring ability, also in creating them for somebody else. He's a guy that's very willing to learn, he's got a very good mentality. But he's a player that needs to have confidence, and who is sensitive in a certain environment too.
"If you bring a player that's overseas, and he comes over here, he doesn't speak Dutch or English, you put him into a room somewhere in an apartment and expect this player to produce straight away. It's going to be hard, it's going to be very difficult. We spoke to him, we arranged that his mother was coming over as well to get the player into a certain mode as a family guy. That way he could go to work with a good attitude, feeling happier, and eventually get to a certain level. Already when I was there he started showing quality, people were starting to talk about him and notice the change that he's made.
"Then after I left and the other manager came in and kept playing him, he grew as a player, into one of the best players over there. Now he's made a very big transfer to Leeds, unfortunately he got injured but he's back and he's already scored two goals in two games.
"I think Leeds is going to enjoy him. He's a world class player, he can only become better, and I'm very happy for him. "
Sinisterra has already shown glimpses of class in the early stages of this season.
The 23-year-old has scored two excellent goals in five Premier League matches.
