Better players have signed for less than ADA over the years. ADA can suck it up for 1 year, play his ass off, and then earn a bigger payday next year when we have more cap space.
His agent knows how little cap we have. He knows the team needs a cushion to operate over the course of the year. I get why ADA didn't sign earlier when there was hope a guy like Kreider, Names or Strome might be moved. That ship has sailed. We have very little cap space. The team traded and signed Trouba. We have Fox. ADA is not helping himself here. He should be in camp working with the team.
His coached benched him for 20% of the games last season. He's 23 and already on his 3rd team. Holding out for a little bit more money might help his pockets now, but it could really hurt longterm if he burns bridges with his third organization.
Sign the contract. Play your ass off. Earn your payday.