FORMER Swansea City loan star Marvin Emnes is suffering due to personal problems, his club Middlesbrough have revealed.
The Dutchman shone during a temporary spell at the Liberty Stadium back in 2010-11 and Swansea have since made a couple of attempts to bring him back to Wales on a permanent basis.
But Emnes has remained at Boro and, after starring for the Riverside club last season, his form has collapsed this term.
The 24-year-old forward scored his first goal since December last weekend having hardly played because of what is being described as an ongoing personal situation.
"Within our football club, I think I have a fair idea of what's happened to Marvin," said Boro boss Tony Mowbray.
"It's not really for public discussion. Marvin has had one or two things he's had to deal with, and we've had to deal with them as well."
Former Swans boss Brendan Rodgers was a big Emnes fan, and the club were interested in him last summer.
However, Swansea felt Boro's asking price for the ex-Sparta Rotterdam player was too high.
"In my opinion, he's a really high-quality football player who is probably the most technical player at the club," Mowbray added.
"I've said that for the last two and a half years. When I arrived he was on loan at Swansea and cast out, but he returned and scored 17 or 18 goals last season.
"He's had some issues to deal with this season and he hasn't produced the high standard of football we know he can.
"But while he's here we have a responsibility to try to get the best out of him."