Chelsea have set their asking price for Hakim Ziyech after Jose Mourinho's Roma became the latest club to express interest in signing the Morocco international.
Ziyech has underwhelmed at Stamford Bridge following a £33m move from Ajax in 2020.
The 29-year-old helped Ajax win the Eredivisie title and reach the Champions League semi-finals but has failed to produce his top form in west London.
Multiple Chelsea managers have overlooked Ziyech, who has only started four Premier League games this season under Graham Potter and Thomas Tuchel.
Given his lack of game-time, Ziyech is open to leaving Chelsea before the January transfer window closes and the likes of Newcastle United and Aston Villa have been linked with the winger.
According to Gianluca Di Marzio, Italian side Roma have entered the race to sign Ziyech as they prepare for the likely departure of Nicolo Zaniolo.
It is claimed Chelsea are asking for 20m euros (£17.5m) for Ziyech and have also been in contact with Roma's Serie A rivals AC Milan over a deal.
While Ziyech has underwhelmed at Chelsea, he impressed during the Qatar World Cup to help Morocco become the first African nation to reach the semi-finals.
Former Chelsea star Ruud Gullit still rates Ziyech highly and believes he could become a 'top player' at a club like Barcelona.
Speaking on Ziggo Sport, Gullit said: 'The way Ziyech plays for Morocco, I've never seen him play for Chelsea. It's not just him.
'I think Chelsea have put him in positions that don't suit him at times. He just needs to play on that right side.
'I wonder... I think he comes into his own in Spain, I think. I have the impression that he has never reached the level of Ajax in England.
'I would like to see him in Spain. He can reach the top. He would also fit well in the Barcelona team.'
Chelsea are keen to trim Potter's squad having spent more than £250m on new signings last summer and almost £200m this month.
Despite the recruitment, Chelsea are just 10th in the Premier League - 10 points outside the Champions League places.
The Blues, who have the weekend off following their FA Cup exit, return to action next Friday against west London rivals Fulham.