Chelsea are reportedly considering joining Manchester United in the chase for Porto and Portugal goalkeeper Diogo Costa, according to EPL Index.
The report claims Costa has become a growing priority for Xabi Alonso, with United said to be exploring a move to bring the shot-stopper to Old Trafford. Chelsea, however, are understood to be weighing up whether to escalate their own interest and enter the race for the 26-year-old, who reportedly carries a valuation in the region of £51m.
While no formal bid has been mentioned, the suggestion is that both English clubs see Costa as a viable option to strengthen their goalkeeping options, with his performances for Porto and Portugal continuing to attract attention from the Premier League.
As it stands, this remains speculation rather than an advanced deal, with EPL Index indicating Chelsea are only assessing the situation rather than actively pursuing Costa at this stage. Any concrete move would likely depend on how United's own interest develops and whether Porto are open to negotiating around their valuation of the goalkeeper this summer.