My apologies if I'm only repeating what someone's already said, and I wanna give a spoiler warning to those who haven't seen Breaking Bad but plan to do so.
What I see as a possibility is that Nacho might contact Mike about his Hector-problem, telling him about the meds and that he needs him to go away (probably wont be too close to this, since we've already seen this with Tuco, but something in the ballpark of this). Mike then consults Gus about this idea, since he knows Gus has a bigger plan for Hector, they team up and alter his meds to make him sick enough not to work but healthy enough to stay alive and aware of his surroundings.
I could also imagine Nacho contacting Jimmy asking for a favour, because as we know, Jimmy owes him for ratting on Nacho. This might lead to Jimmy contacting Mike, Mike contacting Gus and so on...
This has been said probably a thousand times, but it gives some foundation to my ideas. We know from S02E08 from Breaking Bad that Saul knows Ignacio (Nacho), "It was all Ignacios idea", giving a hint that they'll work together in the future of BCS.
Edit: We also know that Nacho first wanted Tuco dead, before Mike came up with a better plan. So I doubt that he will be the one who comes up with something more creative for Hector. I think his plans for now is killing off Hector, with time being of the essence, since Hector is pushing on his fathers business.
