For Oliver Glasner, this summer will be hugely important to his success at Crystal Palace, now it seems two players are nailed on to exit. Crystal Palace are expected to have a pretty substantial turnover of players this summer as the Oliver Glasner era takes shape. This will come in the form of incomings and big money outgoings. However, there are also eight players whose contracts are expiring come June with none of these players sure to get a new contract. While some will be unsure over whether Dougie Freedman extends their deals or not, now it’s been reported that two names are almost sure…