Chelsea will go head-to-head with Barcelona in the race to sign Porto defender Alex Telles this summer, according to Diario AS.
Frank Lampard wants to strengthen his squad significantly when the transfer window opens after failing to make any additions in January.
A new left back is high on Lampard's wishlist, although the Blues will not pursue their first choice, Ben Chilwell, due to the huge price-tag placed on him by Leicester.
Spanish newspaper AS claim that the Foxes want around £82m for Chilwell, who has become a regular for England over the last year.