Crystal Palace could be in line for a handy cash influx with a sell-on clause potentially triggered this summer thanks to West Ham interest. This summer is set to be a busy one for Crystal Palace and already two arrivals look imminent, while some big exits are hot topics. Chadi Riad is awaiting his announcement as the new centre-half at Selhurst Park, likely becoming the replacement for Marc Guehi should the Englishman end up departing this summer after the Euros. Closely following this deal appears to be Daichi Kamada‘s arrival, with it being reported that he’s completed the first part of his…