Kind of wasted my breath, because I wrote this at 11pm and the very next morning I saw they booked Browne vs. Silva.
Who knows about Sylvia. There was news that he was signed to Strikeforce and then all a sudden he wasn't. The fight with him and Barnett makes sense though.
Another possiblity is Devin Cole. He was rumored to be Rothwell's replacement against Browne, but after the UFC found out about his troubled past that was quickly nixed.