Brisbane Roar announced they'd manage to poach Perth's star striker, who had only recently returned to form after a long injury lay-off, under the nose of a rebuilding Glory outfit. 

Sage said the move "blindsided" him and tore into Taggart - who scored nine goals in 14 starts last season - for betraying the club.  

"It's not only extremely disappointing when you take a player who is at the crossroads in his career with injury, nurse him through at great expense and finally we get him right and then leaves with no thanks or even the decency to tell us," Sage wrote on Facebook.

"No, he just let's the other club announce it. Blindsided..

"He said he would wait till our new coach was appointed.. so a liar as well...He would have been our highest paid player but all we got was a two fingered salute.

"That's not a GLORY player.."