Chelsea have agreed to sell Trevoh Chalobah to Italian side Como. The centre-back will move to Serie A in a deal worth £31 million with the Blues pocketing £25.7 million upfront with an additional £5.1 million in add-ons. Chalobah's transfer to Como includes mystery clauseChelsea have done well to reach this agreement with Como. According to The Athletic, Chelsea successfully negotiated a sell-on clause into the 27-year-old's transfer meaning they'll be entitled to a future fee should Como sell him. The clause's value will only become clear if Como move him on for a fee at a later date.