The Blues allowed their Ghanaian flop to join Schalke on loan after just one season in west London in which he failed to make any impact under both Jose Mourinho and Guus Hiddink despite arriving with a burgeoning reputation.
Although not a key player, Rahman’s move has left Antonio Conte short of options at left-back, and even though there have been recent links with Koln’s Jonas Hector, reports claim that Rodriguez is wanted.
The Switzerland international has long been hailed as one of the best full-backs in the Bundesliga and has been lauded for his set-piece prowess.
It’s understood that the 23-year-old is ready to leave the Volkswagen Arena, with Chelsea willing to match his £22m price-tag.
Chelsea’s only senior option at left-back is versatile Spaniard Cesar Azpilicueta, but he is more comfortable on his natural right-hand side of the pitch.