The 33 year-old has put pen to paper on a one year deal with the Wolves, with the option of extending it further into 2017.
Gidley is one of eight new faces at the Halliwell Jones stadium, with Warrington looking to improve on their 6th place finish in Super League.
“I’d spoken to Matt right through his time at St Helens, I’m great mates with Danny Buderus, who spent three years with Leeds, and with Joey, who came over here and spent time with Warrington,” Gidley told the St Helens reporter.
“They are three guys who I always go to to seek some advice from in all different parts of life, and I know I’ll get an honest answer from them.
“They all had a great time coming over with their families – Danny and Matt had small kids at that stage like myself and they all had a great time.”
Gidley is in new surroundings for the first time in his career, having spent his whole time in the NRL with Newcastle Knights. At 33 years of age, Gidley insists that he isn’t over here for one last pay packet.
“My mindset is the complete opposite. I had a great career at Newcastle but I was ready for a change – I grew up there and played my whole career there,” he said.
“To come over to Super League to a new club and town, I’ve got to earn my coach’s and teammates’ respect through how I train and certainly have to earn my home fans’ respect by how I play. For me, that’s a great thing to have that sort of challenge in my life.”