Jon McCarthy said he jumped at the chance to work with Steve Burr again after being brought in as first team coach.
McCarthy, who played under Burr for Hucknall Town and Northwich Victoria, joined up with the squad before the trip to Woking.
He said: “Steve and I always kept in touch and I have followed what he was doing.
“I know what the gaffer is about and he will have success and I'm looking forward to being a part of it.”
As a player, McCarthy won 18 caps for Northern Ireland and spent time with York City and Port Vale before moving to Birmingham City for ï¿½1.5m.
He suffered three broken legs in his time at St Andrew’s and ended up dropping into non-league, where Burr convinced him to play on.
“Steve would like to tell you he rescued my career and he probably did a little bit,” said the 43-year-old.
“I was probably going to retire but Steve gave me opportunity to play again and I'm glad I did. I started at Hucknall with him and then we went on to Northwich and got promoted to the Conference, had a good cup run and stayed up in that division and it was a great time.”
McCarthy hung up his boots in 2007 when he moved into coaching and will combine his role with the Blues with lecturing at Mid-Cheshire College.
He said: “The opportunity to come here is perfect for me. It’s a great challenge and it's really exciting for me.
“I'm a new face and I know what change brings to a dressing room and I just can't wait to get involved with the lads.
“My idea on football is very much the same as Steve's. He wants the full backs to go forward and he wants attacking football."
McCarthy believes the Blues have huge potential and is relishing his return to club football.
“It’s great coming back into the dressing room and it’s really exciting me,” he said.
“I’ve got a lot of respect for what the club has achieved over the past couple of years. I remember playing against Chester for York in the league and it’s always been a league club to me.”
Burr is looking forward to working with McCarthy and has tipped him to make a valuable contribution.
“Jon is someone I have worked with as a player and he has got some fresh ideas and along with myself and Gary Jones he can help us achieve our aims,” he said.