Attacking midfielder Eze, 25, and winger Olise, 22, are two of the big success stories out of Palace in recent years. The former has scored eight goals and bagged three assists in 24 Premier League games this season and the latter, who has had an injury-hit campaign due to a hamstring issue, has found the net seven times and turned provider on four occasions in just 15 matches. These price tags will test the resolve of the likes of Spurs, City and more this summer.