Crystal Palace have expressed interest in Sunderland's Dennis Cirkin, with his impressive performance catching the eye of several Premier League clubs. The 22-year-old left-back, who has been a key player for Sunderland, has also garnered attention from Tottenham, Chelsea, West Ham United, Everton, and Leeds United. Cirkin, who was once part of Tottenham's academy, is being closely watched by his former club as they consider a summer transfer, given that he is entering the final year of his contract. The possibility of his transfer depends on Sunderland's promotion chances, as he is expected to move if they do not achieve promotion.