At least 2 teams have talked to Redskins about trading for RGIII, per sources. Griffin controls process because he has to sign off new deal.
— Adam Schefter (@AdamSchefter) February 26, 2016
Adam doesn’t give the names of the teams, so I did some digging myself and there seems to be some disagreement on who the teams might be.
The one team that has come up the most are the Broncos, the second team that has been floated around are the Rams.
Depending on who you believe the Browns and Texans also have interest.
The one team at the moment that does not have interest are the Cowboys. As Adam said RG3 essentially has veto power because he would have to agree to new contract with the team that is doing the trading.