Grant has been released by Souths as they accomodate the return of Sam Burgess under the salary cap, but admits he is disappointed not to see out his four-year contract at Redfern.
“I’m disappointed the way it went at Souths for sure,” Grant said.
“On the other hand one door closes and another one opens. I just think it was an opportunity to look elsewhere, I’m not 100 per cent sure why on Souths’ part but there was that opportunity to go elsewhere.
“That came up at the Tigers and I think there’s an opportunity for me to get more game time than I would at Souths.
“I’ve got a pretty good relationship with Madge [South Sydney coach Michael Maguire] and regard him as a mate moving forward. That’s the most important thing in rugby league, those mates and memories you gain along the way.”
Grant was released by his junior club Penrith from the final two years of his contract in 2014 before signing with with South Sydney.
The front-rower believes he is leaving the Rabbitohs in much better physical condition and with his best football ahead of him at Wests.
“I think going to Souths and working as hard as we did, it rejuvenated my body and lit the fire again,” Grant said.
“I was busted when I first went there but Eddie Farah put a lot of work into me and worked on my bulging disc problem and got my core strong again.
“I feel a lot better for it now and excited about being at the Tigers fit and fresh.”