The full-back was offered extended terms to remain with the Baggies, but it was confirmed today that he had instead opted to link up with Premier League rivals Sunderland on a free transfer.
However, despite having expressed his dissatisfaction at the 27-year-old's exit, Garlick has stressed that the club have already started to look for a replacement.
"We're obviously disappointed by Billy's decision but wish him well in his future career. With there being no guarantees that Billy would re-sign, we have been preparing for this scenario and will pursue the options we have been exploring in the right-back position," he said.
As well as West Brom, Jones has also played for Crewe Alexandra and Preston North End.