He's been unhappy on the org ever since they kicked nzr. They're friends and he really wanted to play with him, then they kicked him out of nowhere and he didn't even knew, so he was like "wait a minute wtf" but let it go
Then apparently he really wanted Frod to coach the team after Goked left, but Lev didn't really made any effort for it (Frod was AC on MIBR and would later on become HC), so he got pissed again they didn't hear him
Then after the season he was like "well what a weird year let's make some moves for the next one" and Lev was like "yeah lets do this" but they haven't asked his opinion on what to do and he apparently was pissed of and then he started to seriously consider leaving
So basically he thought he would have more power on team decisions and they didnt really care what he thought (all of this was reported by bruno povoleri at the time)