Chelsea are favourites to see off interest from both Manchester clubs as they look to seal a deal for Roma centre half Mehdi Benatia, according to the Express.
With the sale of David Luiz to PSG for £50m, the Blues are now in the market for a replacement. French wonderkid Kurt Zouma may go out on loan for another season to gain some first team experience before coming back to Bridge, seemingly as a long term solution for when John Terry eventually decides to hang up his boots. In the mean time, however, Chelsea need an immediate response.
Reports in Italy suggest that the Londoners are leading the race to sign the 27-year-old from the Serie A giants, but Mourinho is facing stern competition from Louis van Gaal up at Old Trafford.
United's defensive worries may be more cause for concern than Chelsea's, as the red devils are looking to replace both Rio Ferdinand and Nemanja Vidic, leaving a gaping hole in the their back line.
United have reportedly also been on the look out for Borussia Dortmund's Mats Hummels, and are determined for one of the two players to put pen to paper for the club.
Manuel Pellegrini has also been linked with a move for the Moroccan, but is likely to concede to his Premier League rivals following the signature of Frenchman Eliaquim Mangala.
Benatia will be seen as an understudy to England duo Gary Cahill and John Terry, so Mourinho is unlikely to fork out huge sums for the Roma star.