Chelsea are rumored to be working on a deal that could see Shakhtar Donetsk midfielder Douglas Costa join the side before the end of the transfer window. The Brazilian confirmed earlier this week that it would be ‘a dream to play for Chelsea’ that he will try to negotiate as he thinks ‘it’s time to go’.

Shakhar are reluctant to lose the Brazilian player, and a rumored first bid of £16 million has been rejected by the Ukrainian side. Costa, who is a former target of both Arsenal and Manchester United, would increase Chelsea’s 1/5 odds to win the Premiership according to experts at Betoclock.com. He is said to hold talks with manager Mirca Lucescu and officials in the next coming days in order to press for a move to Stamford Bridge.

The blues are struggling to finalize a deal to sign Fiorentina’s Juan Cuadrado the number one target for Mourinho this season according to Sky Sports. Even with Chelsea increasing there original bid of £20.6 million to £23million, the team are still £3 million behind the wingers buyout clause and it seems the side won’t budge.

With the potential departing of Andre Schurrle and Mohammed Salah and the difficulty of securing Cuadrado, Chelsea would need to bring a another forward midfielder. The 24-year old Costa has been on Chelsea’s radar since a young age, having already made a £4.5m bid for the youngster before he joined Shakhtar. By making another bid for Costa they are also putting pressure on Fiorentina to make a decision on the Cuadrado deal.

Costa’s international and former Shaktar teammate Willian made a £30 million move to Stamford Bridge in August 2013 and according to The Sun Mourinho is keen to reunite the two.