Traore scored 14 goals for Vitesse to help them qualify for Europa League

But Traore, who says he has improved this year, faces work permit issues

Jose Mourinho is 'crazy' about Bertrand Traore, says Vitesse's Peter Bosz

Jose Mourinho is keen on including on-loan 19-year-old Bertrand Traore in his first-team squad at Chelsea next season, according to Vitesse head coach Peter Bosz.

Traore has spent the season at the Chelsea-linked Dutch side, scoring 14 league goals to help them qualify for the Europa League and seemingly impressing his parent club back in London.

Mourinho called the youngster 'one of the best talents of his age' after he spent pre-season with the Blues in 2013 but work permit problems delayed Chelsea signing him and forced him to move on loan.

Jose Mourinho said to want to include Bertrand Traore in his first-team squad for next season

Mourinho is 'crazy' about the 19-year-old on loan at Vitesse according to the star's current coach

Peter Bosz would like to keep Traore in his side but accepts that Mourinho would like him at Chelsea

BERTRAND TRAORE SEASON STATS Appearances: 31 Goals: 14 Assists: 5 Yellow cards: 5 Advertisement

And Bosz hinted that those problems might continue to be an issue when speaking about Mourinho's high opinion of his young star.

'Jose Mourinho is crazy about him,' Boaz said. 'If the opportunity is there, they prefer to take him back.'

Traore himself told De Telegraaf: 'Chelsea are very happy with my development. But I will only hear what is next in the summer.

'I'm ready when the opportunity comes and I'm not afraid to show my ability at Chelsea.

'This has been the first time I have played a full season in professional football. I've taken a huge step forward physically.'

The Burkina Faso international scored 14 league goals for Vitesse in their push for the Europa League

Traore got rave reviews from Mourinho following his appearances for Chelsea in pre-season back in 2013

Traore is a full international for Burkina Faso - currently 61st in the FIFA rankings - but that is unlikely to be enough for him to earn a permit reprieve under the FA's tighter laws that come into place this summer.

Vitesse would like him to return to the Eredivisie next season but the young forward was non-committal when asked about his future in Holland earlier this week.