The only coach who would make sense to replace Gattuso right now is probably Leonardo. Bring in someone new from outside the organization wouldn't work because that coach would know nothing about the players that are here and by the time he familiarizes himself with everyone and everything, the season is over already.
Missed the game, and was sad to see the result. This past month has absolutely killed the entire season.
Honestly from watching the game the players started the match trying too hard individually rather than playing hard as a team. They are a young team and are under a lot of pressure. This does not look good for the rest of the season. We all know Gattuso's tactical limitations, but this is a problem with his man management. He is having trouble taking that pressure off the guys.