Coaches often ask their GM if they can get them a certain player that they like. I can only surmise that that is why the Rangers signed Glass who played for AV in Vancouver. If and/or when AV gets tired of him is probably when Gorton looks to move him.
FWIW AV's Montreal and Vancouver teams always had tough guys and agitators---Corson, Manson, Scott Thornton, Turner Stevenson, Asham and appearances from guys like Vukota, Sylvain Blouin, Odjick, Jim Cummins and David Morrissette (that guy was a real beauty) in his 4 years in Montreal.-----Bieksa, Jeff Cowan, Rick (RIP) Rypien (one of the toughest players pound for pound ever) Shayne O'Brien, Hordichuk, Mike Brown, Glass, Kassian, Wiese, Sestito and other characters such as Matt Cooke, Lapierre, Burrows, Raffi Torres in his 7 years in Vancouver. Those teams weren't all made up of cream puffs.
For the Rangers in his two years it's come down to Dorsett and Carcillo in 13-14 and Glass last year which kind of leads me to conclude that AV's toned down not only the fighting but the physical play as necessary elements for his present team's success--or in other words it could be worse. $1.45 million is not exactly chicken feed--nor is it good bang for the buck IMO but it's not going to break the bank even in a cap world.
Anyway my best guess is that AV is why Tanner Glass is presently employed by the Rangers and FWIW it's hard to argue with AV's success over the past two seasons. And FWIW I've seen a lot of Rangers coaches since 1971-72 and AV might be the best in my lifetime following this team.