Chelsea have verbally agreed a deal with Atletico Madrid for the transfer of Diego Costa, reports The Metro.
The Brazilian-born striker has been in fine form at the Vicente Calderon this season scoring 19 goals in just 20 appearances in La Liga.
That fine form has caught the attention of the Premier League, with Arsenal and Manchester United keen to add Costa to their ranks.
Mourinho has admitted that he is looking to bring in a top class striker in the near future and sees Costa as a fine addition to the Stamford Bridge line-up.
Atletico know it will be hard to keep Costa beyond the summer and will undoubtedly love to see him move to Chelsea, hoping to build bridges ahead of a transfer move for Thibaut Courtois.
It will be a blow to both Arsenal and Manchester United who are both planning on adding to their striker ranks in the summer.
Arsenal are currently getting by with just Olivier Giroud and Nicklas Bendtner up front while David Moyes continues to see his star strikers Wayne Rooney and Robin van Persie struggle for fitness.