Well I agree they'll face competition in the Premier League this season but observe that squad and see if there any weakness in their first and second eleven, they're fully prepared for any challenge.
His line up is filled with effective players, he'd have a lot of rotating to do, which would strengthen the team's momentum if he gets the strategies right. Other teams wouldn't find it easy to win against switched tactics. But when he's not a master at placing these players especially strikers in such a way they'll collaborate and work together they may end up dragging goals.