"It's an exciting challenge," he admitted. "I was at the Dragons for five years, and it was like home for me. It was a big decision to move but I think I needed the change. I want to settle in quickly here and hopefully, I can do well for the Ospreys.
"I want to be playing regularly, just doing what I love, which is playing rugby. I want to be playing well, being seen, and you never know where that can take you, we'll see what happens.
"If I didn't think I'd be able to have an impact then I wouldn't have come here. At the end of the day, I'm up against players like Shane Williams, Tommy Bowe and Nikki Walker, and there are some quality young players coming through.
"It's a big challenge to force my way through that lot to get games, but I want to test myself, to prove what I'm capable of. I can only learn from working with the likes of top internationals, and hopefully I can progress as a player and really challenge for a place. I'm ambitious, which is why I've come to the Ospreys"
With the Ospreys confirming Fussell's move back in February, the player had to wait five months to link-up with his new team, but he says that know he's here, he can't wait to get started.
"It's great being here at last, it's been a while since I agreed to sign. To be honest with you, it's like the first day at school, being the new boy coming in. There were nerves this morning but everyone's been really welcoming and looking to help me settle in," he said.