Sheffield Wednesday are expected to be active in the coming months.
The Owls are expected to spend big in the summer, following the takeover of Dejphon Chansiri, and a number of new arrivals are set to head to Hillsborough.
Gray wants to get them in early to give them the best chance of settling before the 2015/16 season starts, but admits that dealing with so many agents could prove problematic.
“I’d love to get my business done early but it will all be driven by agents," he said.
As well as bringing in new additions, Wednesday are also expected to offload a number of their fringe players.
The Owls need to make room for new signings and Gray says that he will tell individual members of his current squad their fate in the near future.
“As soon as we get the last game of the season out of the way we will be talking to the lads," he explained.
Wednesday have 16 players with their contracts expiring this summer, so it promises to be an anxious wait for many members of the squad.
Their last chance to convince Gray that they deserve to stay comes this weekend, with Wednesday taking on already promoted Watford at Vicarage Road in their final Championship fixture.