They have sent Irish players to the two next biggest Glasgow clubs in recent years - O'Connor to Partick Thistle and Connell (repeatedly) to Queen's Park - without it doing much for their careers. Youth players there really need loans to other SPL teams, but the other SPL teams don't particularly rate the youth systems at the two Glasgow clubs (understandably), so tend to steer clear.
They'll take a squad player, like a Scales or Johnston, but rarely a youth player.