Rondon has a relegation release clause of £16.5million, and it is likely that Cardiff will have to see off fierce competition from other top-tier clubs for the Venezuelan's signature.
West Brom are bracing themselves ahead of their potential relegation, with the club set to bid farewell to several of their players including; Rondon, Nacer Chadli, Jay Rodriguez and James McClean.
Cardiff will have their opportunity to seal promotion on Sunday as they face Reading. Meanwhile, West Brom continue their late battle to retain their Premier League status with just one match remaining.
Since Darren Moore was appointed caretaker manager, the 'Baggies' have managed a five-game undefeated run so remains to be seen whether the club can launch a monumental comeback.