Dropping him in dynasty? Holy over-reaction batman. Colston has 3 awful games, a DNP, and a bye his last five games -- he's definitely been brutal. But... the first four weeks of the year he played well (82 - 1192 pace) so it's pretty unlikely he just suddenly became too old / whatever to play magically between weeks four and five.
Three bad games could easily be random variance, particularly at the WR position. There's also a chance his body is just worn out and he's done, but in typical dynasty formats with give or take 100 WRs likely rostered, flat out cutting a guy who has been productive for years due to 3 bad games isn't a great decision.
I agree it's dumb to cut him in dynasty but his knees have been a ticking time bomb. They could be hurting him enough that he doesn't want to do it anymore.
Are you guys serious? Getting rid of him in dynasty is exactly what you should be doing. Trade or cut him for whatever you can get.He's exactly the kind of player you don't hold onto for too long, and it looks like "too long" started at the end of last season.
So you'd cut him for the likes of Santana Moss, Kevin Ogletree, Josh Morgan, or Tandon Doss? That's what we're talking about here. That's what's out there assuming typical league settings (12 x 25 or deeper). The chance that Colston's 3 bad games are variance is way greater than the chance that any of the poop available on the WW, or the fodder taking up your 24th, 25th, etc roster spot for that matter, offers any value.
There is ZERO trade market for an aging WR mired in a serious scoring slump. Rebuilders want youth, contenders want immediate production, and Colston offers neither. He's a clear hold and hope.