We reached agreement with Fulham for the transfer for the US international on transfer deadline day.
The attacking midfielder joins us after top-scoring at Craven Cottage in the last two seasons.
“I’m very excited and looking forward to the challenge,” said Clint.
“To play under this Head Coach and play for this club is a dream come true. I want to make the most of it and work as hard as I can to get onto the field and do well.
“There are a lot of great players here, I’m looking forward to training and playing with them and trying to fight for a spot in the team.”
On his departure from Fulham, Clint added: “A lot was said and written ahead of me leaving Fulham. It wasn’t how it was portrayed, but that’s in the past now and we move on.
“I want to thank the fans for everything, some of the best memories I’ve had in football and thank the chairman for giving me the opportunity to come from the MLS and compete over here.
“All I can say is thank-you and now I’m looking forward to the next challenge.”