Chelsea will have final say on Jeremie Boga's situation at Sassuolo, it has been revealed.
Barcelona have expressed interest in the former Blue ahead of the January market.
However, The Sun says Chelsea ensured there could yet be a future at the Bridge for Boga after inserting a clause in his Sassuolo transfer allowing them to re-sign him for the same £3.5m they sold him for.
Boga left Chelsea in the summer of 2018 for the Serie A minnows.
Frank Lampard is known to be in the market for a new winger this winter, with Borussia Dortmund's Jadon Sancho his top target.
Crystal Palace ace Wilfried Zaha is also on the new manager's radar.