That's a blow. McClean might be missing for June as well, and it looks like Robbie Brady'll be doing well to be anywhere close to match fit by then (came on as an injury-time sub last week for his first appearance in four months) Enda Stevens did at least make his comeback after three months in that game, so that's something. Only other one of the regulars left is Coleman.
We've spoken about the looming full-back crisis before - it looks like June might be the time to throw people in and see if they sink or swim. Manning did ok last month (albeit against a poor side where he was barely required to do any defending). Cyrus Christie is still an option too. And then some random young players I guess?