On the limited details that appear here, all would seem above board.
Playing Restrictions (Club)
"(A) A Player may not play in any Championship with two Clubs in a given year’s Championship, either within a County or in different Counties save as provided for in Exceptions below and in Rule 6.12." (Did not play Championship in Dublin, not relevant here in any case)
“(B) A Player may not play with two Clubs in the exact same Competition of a given year”. (AHL2 is a totally different competition to the league in Clare)