Crystal Palace could be about to sell another player to Premier League rivals. This summer has already seen Crystal Palace sell multiple players, with Premier League rivals being the biggest benefactors at the club. Joachim Andersen was sold to Fulham for £30m, while Leicester City have poached Jordan Ayew for £5m. But there is still potentially more to come, with Newcastle still holding an interest in Marc Guehi, while Sam Johnstone is also looking for a new club. READ MORE: Crystal Palace confirmed signings, transfer ins and outs, loans and releases for 2024 summer windowSam Johnstone set fo…