The 24-year-old stopper was released by Wolves recently.
On Monday, the 24-year-old posted a heartfelt message revealing that his six-and-a-half year stay with the West Midlands club had come to an end.
The Irishman was one of six Wolves players who failed to secure new contracts, with the likes of Bjorn Sigurdarson, Tommy Rowe, Razak Boukari, Zeli Ismail and Liam McAlinden not being retained by manager Kenny Jackett.
Twenty-five-year-old Batth has spent his entire career at Molineux and would have been around when McCarey signed from Irish football club Monaghan United in 2010, and the defender has wished his former team-mate the very best of luck.
All the best. Time to go play some football. pic.twitter.com/CM1fEiJrY1— Aaron McCarey (@mccareyA1) May 9, 2016
McCarey's last appearance for Wanderers came way back in August 2014 for a Capital One Cup outing with Northampton Town. He played second fiddle to Carl Ikeme for so much of his Wolves career and ended up only registering seven appearances in all competitions.