Hammers players and fans were furious when Academy product Grady Diangana was sold to West Brom for £18m, with skipper Mark Noble tweeting he was “gutted, angry and sad."
Moyes said: “Mark Noble was entitled to give his opinion. I haven't had any conversation with Mark about it.
“I think they showed real solidarity amongst themselves, I think the captain showed exactly what the players feel. I think there is a real building spirit here.
“But we were building a team that finished in Europe the majority of seasons after that. Football moves on. The players have been in great spirits."