Chelsea are reportedly looking to make a January bid for Barcelona's Sergio Busquets following reports of the midfielder refusing to sign a new contract at the Camp Nou.
The West London club already have the likes of Nemanja Matic, Cesc Fabregas, Ramires and John Obi Mikel playing in the central/defensive midfield position, but Mourinho is reportedly keen to add a new player to add further depth to his squad.
And according to the Daily Express, the Portuguese boss has identified Busquets as a potential target in January as he looks to propel to Blues to their first English Premier League title since 2010.
Although the 26-year-old's current contract with Barcelona only expires in 2018, the Catalan club are keen to offer him a new contract.
However, it is believed that Busquets is not interested in extending his stay at the Nou Camp after losing faith in Luis Enrique's future plans for the club.
Due to this reason, Chelsea are reportedly ready to make a swoop for the unhappy Spaniard in January.
However, the Blues will not be getting the signature of Busquets that easily as a number of top clubs including Arsenal, Manchester United, Paris Saint-Germain and Bayern Munich are also reportedly interested in acquiring his services.
Meanwhile, Atletico Madrid have announced that they have reached an agreement with AC Milan over the transfer of striker Fernando Torres on a one-and-a-half year loan deal.
Chelsea recently announced that their record signing Torres would be permanently moving to AC Milan on 5 January, but the Spaniard will be immediately loaned out to Atletico Madrid provided he successfully passes a medical at his boyhood club.
"Fernando Torres will return to Atletico de Madrid after an agreement was reached between the club and Milan establishing that the international striker will play on loan for the remainder of the season and the following campaign. The signing is subject to the relevant medical examinations," read a statement on Atletico Madrid's official website.
The Spain striker, who has failed to impress in front of goal following his transfer from Liverpool to Chelsea in January 2010, expressed his delight at rejoining his old club after seven-and-a-half-years.
"At last back home. Thanks to all that have made this dream come true. Forza @Atleti," he posted on Twitter.