Cardiff Blues could face a battle with Wasps over financial compensation following Dai Young's decision to take over at the Aviva Premiership club.
Wasps chief executive Chris Thomas believes they cannot be forced to pay anything to the Welsh region.
He said: "To pay compensation in this situation....there's no precedent in employment law to say we have to do that.
"It's no different to anyone moving between different companies."
Blues chairman Peter Thomas has been reported as saying they are prepared for a legal battle with Wasps over the issue.
But Wasps' chief executive and namesake Chris responded: "Our position is that we haven't done anything to entice Dai away from Cardiff.
"It was his decision to resign and accept a position here. He wanted to come.
"We've talked to Cardiff about the situation and kept them informed and they've taken their stance.
"We don't believe we've done anything improper as a club to entice Dai to us.
"We'll continue to talk to them but at the moment we're happy with our position.
"It's a difficult situation. It's different to a player where you have a player's registration.
"With a coach you're in no different type of employment contract to anyone else."
Ex-Wasps boss Tony Hanks has already expressed an interest in taking the reins at the Blues, while the region have refused to comment on speculation linking Young's former assistants Gareth Baber and Justin Burnell with the position.