Rochdale chief pleased with success of youngster Dawson
The defender has joined West Bromwich Albion for an undisclosed fee but will spend the remainder of the season on loan at Spotland.
The 20-year-old has attracted admiring glances from a clutch of clubs and Middlesbrough had a bid turned down earlier this summer.
Garlick said: "Realistically we knew that Craig would one day leave the club. Craig himself has been in our thoughts as he has expressed a desire to progress up the football ladder.
"Craig now knows his short and long-term future and thoroughly deserves his opportunity next season to compete at an even higher level of the game."