It's probably bogus, but you never know. If Sam has decided not to restructure which is possible given the lack of progress in talks, then the Rams will be more likely to move him. Cleveland is a mess, and cannot control Manziel. Fish would probably be able to handle Manziel's personality, the Rams had scouts that liked him coming out, they have a QB coach who is good at working with mobile QBs now, he comes under contract for longer than Sam, and his value is incredibly low which means the Rams would get a pick too.
Everyone hates Manziel here it seems, but he still has a chance to show he can play in this league. If the Rams think they'd have to franchise tag Sam to keep him next year, they might decide to cut bait provided they get an offer they like.
With that 2nd round pick the Rams could take Carden, Petty, or Hundley. Add a guy like Sanchez in FA and we have:
Sanchez > Manziel> Davis > [Carden/Petty/Hundley]
Not a bad depth chart for next year's camp. What Sanchez gives up in his production he compensates for in not being an extreme injury risk. He knows the Rams' offense and would have far more weapons than he's ever had in the NFL. The cap savings would mean a very high chance of signing a guy like Wisniewski. The draft pick would mean another OL that the Rams would be able to get instead of using it on a QB. Finally, the Rams would not be hell bent on keeping Manziel, if he can't beat out Davis he's cut.