It has been reported that Manchester United are stepping up their bid for Valencia defender Nicolas Otamendi.
The Daily Star Sunday says super-agent Jorge Mendes has been brought in to broker a move to United for Otamendi, 27.
But the influential Mendes will also sound out Manchester City and Chelsea.
City have a long-standing interest in the £25 million-rated Argentina defender.
Otamendi’s agent, Eugenio Lopez, has recruited Mendes to help set up a deal – with Old Trafford the most-likely destination.
Mendes has already taken Otamendi’s Argentina team-mates Angel Di Maria and Marcos Rojo to United.