Sydney FC head coach Vitezslav Lavicka will run the rule over his goalkeepers during next week's Festival of Football tournament in Sydney.

The reigning A-League champions take on English Premier League club Blackburn Rovers, Scottish champions Glasgow Rangers and Greek outfit AEK Athens in an event run over three days at the Sydney Football Stadium, kicking off on Sunday, and the Czech tactician will appoint his number one stopper during the festival.

"We have three big tournament games before us now but we will make the final decision on who will be No.1 before the last game (against Rovers)," Lavicka told the Daily Telegraph.

Lavicka admitted it will be a tough decision to choose between Ivan Necevski and new recruit Liam Reddy but said it was a luxury to have such quality in his squad.

"They have both been very good in pre-season. We are lucky to have two quality goalkeepers," he added.