Sunderland manager Sam Allardyce is keen on QPR pair Steven Caulker and Sandro to boost his survival hopes, according to the Daily Mail.
The Black Cats boss has had a frustrating time while on Wearside, with the club remaining in the bottom three despite their recent win over Aston Villa.
With his side four points adrift from safety, the former West Ham and Blackburn manager is thought to be ready to make moves within the transfer market to boost his chances of Premier League survival.
Despite agreeing to a season-long loan deal with Southampton this summer, one cap England defender Caulker has struggled to nail down a first-team place.
Though a deal could be complicated, a switch to the North East to see out the remaining months of his loan spell away from Loftus Road could be on the cards for the 24-year old.
His Rangers teammate Sandro is also understood to be under consideration by the Stadium of Light chief as he looks to add players with top tier nous.