On 19 March 2021, before the start of the delayed 2021 season, it was announced that Powell would leave Castleford Tigers at the end of the campaign, with early rumours linking him to Warrington Wolves, whose Head Coach Steve Price had also announced he would be leaving at the end of the 2021 campaign.
On March 19, 2021, before the delayed 2021 season began, Powell was set to leave Castleford Tigers. Concurrently, there were rumors suggesting he might join Warrington Wolves, whose Head Coach Steve Price also announced his departure at the end of the year.