Lafferty at 2k a week or even 3k a week gives you an end total of 12k/18k for the rest of the season. As opposed to Goodwillie who's going to cost 50k possibly along with his 1.5k wage, a hell of a lot of bad press and a lot of fans leaving.
Lafferty however we'd have to compete to sign so it all depends on how pally Miller really is with him. Rennie did talk about wanting more of a presence in the box and Lafferty would certainly provide that. Obviously may still be looking for more than 3k as I have no idea roughly what he was on at Killie.