Greater Western Sydney football manager Graeme Allan says his club won't be rushed into naming Mark Williams' replacement, and is yet to decide whether the candidate will need vast coaching experience. It was thought the Giants would look to make a like-for-like substitution for Williams. But Allan suggested there is a chance the Giants may not look outside the club to replace Williams, instead promoting one of their assistant coaches. ''Basically we are looking at three options. The first is to appoint a senior assistant coach, the second is to go for a younger assistant coach and the third is to promote from within.''