Skysports.com understands Sheffield United and Norwich are chasing Crystal Palace defender Paddy McCarthy.
The cash-strapped Eagles are facing intense pressure to hold on to a number of their squad this summer.
Defender McCarthy is among those players coveted by other Championship sides, despite the 26-year-old enduring an injury-hit campaign last term.
A long-term shoulder problem left him sidelined for several months but he still managed to make 20 Championship starts, including in the last day 2-2 draw at Sheffield Wednesday which kept the Eagles up at the Owls' expense.
His performances have caught the eye of fellow Steel City side Sheffield United, whose promotion bid faltered last term, while Norwich are keen to bolster their squad after regaining their Championship status at the first time of asking.