Groves has signed a three-year deal with Warren in the hope that the promoter will secure him the world title shot that he craves.
The move will see the unbeaten Groves leave the Hayemaker promotional stable but the 23-year-old will still be trained by Adam Booth, the man Warren once described as: "The most difficult person I have to deal with in all my time in boxing, bar none."
The switch also means that Groves will be part of the same stable as DeGale - the man who he beat on points in May in a tight grudge match.
Groves has said in the past that he would look to fight at least one more opponent before considering a rematch with DeGale, but a another fight with the Olympic gold medallist now appears closer after signing the deal with Warren.
"I'm very happy that George has chosen to come under my promotional banner and we will now be involved in some big fights," Warren said.
"He's a good fighter and the last fight against James DeGale was the first time I had worked with him.
"Of course, everyone is asking about a return with James, who I represent, and it is an obvious fight that will definitely happen again.
"The last fight was very close and a few observers felt that it could have gone either way.
"One things for sure the public will want to see it again. It's a big domestic rivalry that will become ever bigger."
Londoner Groves, unbeaten in 13 fights with 10 stoppages, is ranked inside the top 15 with the WBC and IBF organisations.
He said: "Having sat down with Adam Booth and discussed at length what was the best move for my career and fighting to progress towards a world title, we agreed that everything that Frank put to us made perfect sense.
"He is the most experienced promoter in Britain by far and we feel has the experience and ability to take me to the very top. Exciting times ahead."
Booth, who also trains former WBA world heavyweight champion David Haye, added: "On the surface, this may seem a strange decision from me and Hayemaker boxing to have made, but this is all about what is best for the career of George and we believe that working with Frank is the best decision we could have made.
"George has the full support of both myself and David Haye as we know that if anybody can take George to the top, Frank is the man."