The ex-Liverpool and Tottenham Hotspur striker has told his new teammate that he will not be able to ease into retirement in the States.
Keane, 34, has been one of the shining stars of MLS since arriving from Tottenham Hotspur in August 2011, helping LA win three of the past four MLS Cup titles, while claiming the 2014 MVP award after recording 19 goals and 14 assists in 29 regular-season games.
The Irish striker will now see former Liverpool teammate Gerrard join him at the StubHub Center this summer and is relishing the chance to add a few more championships to his collection alongside his old colleague.
Stressing that Gerrard will not just be able to ease into retirement during his time in the States, Keane said: “The problem is I think with people in Europe – and this won't be Stevie's case because I've already told him how difficult the league is here – is that people think they're coming over here to finish their career and it's a holiday.
“But when you play for the Galaxy, that's not the case. You're coming over here to win things, because that's what is expected because we're one of the biggest teams in the MLS and we have standards here.
"The league is a tough, tough league."
However, Keane is also confident that Gerrard’s talent will allow him to thrive in MLS, despite a testing final season at Anfield which marked a noticeable decline in his performances.
"His passing is incredible," Keane added. "He's a player that can find someone's feet from 50 yards and you wouldn't have to move. I'm sure he'll get a lot of assists from that, and we're excited to get him here."
The Galaxy certainly look like they could do with Gerrard as soon as possible, having taken only 14 points from their first 12 games of the 2015 season.
That should not much as much of a surprise, though, after seeing club legend Landon Donovan retire in the winter and missing Keane for the past seven games after the skipper picked up a groin strain in April.