I'd keep my eye on D'Andre Swift. I don't think Detroit is all that enamored with him based on what I've read.
Miami was rumored to have liked him in the draft process.
He had a few nice plays last year, but in general he was pretty quiet compared to what I expected based on his pre-draft hype. But why would a team be willing to get rid of a RB on a rookie contract if the player was worth his salary, unless there was some off-field issue, like what happened with Kareem Hunt?
They already brought in a guy they trust more (supposedly). They can grab depth on the waiver wire or in free agency. Sounds like they are targeting Todd Gurley. Maybe they are hurting in another area where Miami has a player they can provide in a deal.
Detroit has an unproven stable of WRs and they are paying Goff a lot of money. Maybe Miami flips someone with a cheap contract (Preston Williams?) and a mid round pick? Maybe Miami gets bold and deals Gesicki for Swift and a draft pick? They just spent a 3rd Round pick on Hunter Long, extended Adam Shaheen and supposedly want Durham Smythe back. They curiously haven't extended Gesicki.
I don't think the Sony Michel clown show will be welcomed in Miami. Melvin Gordon would make sense based on stats but Miami already passed on a big free agent option for the position.
I know it sounds out of left field, but Grier continually surprises us with moves he has made.