CBS continue with their recent trend of trial scheduling late in the season. They're going to flip an original Mike & Molly and a Two and a Half Men repeat a week on Monday. M&M takes a lead-in from Mad Love - which performs pretty poorly at 8.30pm so it'll be a real test of its ability to anchor an hour.
The 9pm slot is up for grabs next season. Had this all happened 12 months earlier, there's no doubt that The Big Bang Theory would have slid into that slot. But having established a Thursday comedy hour, CBS may be reluctant to move TBBT back.
When Everybody Loves Raymond ended, CBS simply promoted the 9.30pm show (Two and a Half Men) to 9pm and it worked brilliantly. So on paper, Mike & Molly ought to get it. But Mike & Molly, while a solid hit, hasn't been as strong at 9.30pm as Two and a Half Men was.
The other possibility is to use some combination of Mike & Molly and Rules of Engagement at 8pm with How I Met Your Mother moved up to lead 9pm. The latter has been a strong performer for years, matching the numbers for Mike & Molly this season without the lead-in.
My pick is the last option:
Mondays:
8pm - Mike & Molly
8.30pm - Rules of Engagement
9pm - How I Met Your Mother
9.30pm - NEW
Thursdays:
8pm - The Big Bang Theory
8.30pm - NEW
Of course, this all assumes that TAAHM really is dead. And rumours continue that there will be a replacement or even that Sheen could return.