Id like Cody Speller if he's available, Frankie Williams and or Ciante Evans Ambles from Calgary woud be great too.
Speller spent nearly the entire time in the tub after leaving WFC. I seriously didn't see him start in any game, though I'm sure he must have. Just like Nevis, it turned out to be a win to let them go. Now... if either guy is healthy, they will be monster. But that's the $64k question, isn't it.
I feel like we rely on our own OL dev cycle now rather than bringing in FA OL. I think we're good with Gray/Eli and whoever we have as "the new guy" backup.
As for Collins.... Collins would be a great pickup. Dude is almost always a great pick in fantasy. He gets the receptions, yds and tds. But does he have "MOS locker room attitude"? Don't know. Haven't seen anything to say he doesn't.