West Ham face a battle to keep hold of Declan Rice.
The Sun says Crystal Palace and Bournemouth are considering bids for Rice after his contract stand-off with West Ham.
The arrival of France Under-21s defender Issa Diop is likely to push the talented Irish teen down the pecking order.
The 19-year-old will not be an automatic starter under new boss Manuel Pellegrini, who will likely bring in more players this summer.
Diop joined West Ham for a club-record deal earlier in the week, after becoming a star in Ligue 1 over the past season.