Hansen said he was unimpressed about the lack of communication from Steven Luatua's team after he announced earlier in the week he had signed a two-year deal with English club Bristol for the beginning of the 2017-2018 season.
Lam will be taking over coaching duties for Bristol for the 2017-2018 season after his successful stint as coach for Irish club Connacht.
"He's (Luatua) been tapped on the shoulder by Pat Lam which is disappointing," Hansen reportedly told Fairfax.
"If you're an ex-New Zealander you should be a bit mindful about players' careers."
