Manchester United's new signing was quick to pay homage to his former side after sealing his move, while touching on his ambitions in England.
Within hours of Ander Herrera's long awaited transfer to Manchester United being announced, the midfielder had uploaded a video paying tribute to Athletic Bilbao and wishing his former teammates luck.
"I would like to say goodbye to the club, and my teammates," Herrera said. "It has been three amazing years for me where I have improved and grown and enjoyed a lot.
"And also I would love to thank the Athletic officials and staff."
The 24-year-old departs San Mames Stadium after three years at his hometown club, having joined from Real Zaragoza in 2011. He went on to make 128 appearances at Los Leones, scoring 11 goals. He won the European Under-21 Championships in 2011, also making the team of the tournament, and was a runner up in both the Europa League and the Copa del Rey in his first season in Bilbao.
United had reportedly been chasing the midfielder around the time of his switch back to the Basque Country, and made a concerted attempt to sign him last summer as one of David Moyes' first signings. Having offered around £25 million for the player then, it is believed a fee upwards of £28 million has acquired Herrera one year later, and the Spanish youth player will now hope to star for the Reds in an attempt to break into the senior national team.
"I'm very proud to have been part of the history of Athletic," the player continued in his video. "Athletic will always have a place in my heart.
"I go from here happy and satisfied."
Herrera then went on to discuss his enthusiasm at joining United, describing it as a new project at one of the world's top clubs.
"I'm passionate about football, and take pleasure in what I'm doing, and will be playing at one of the most important clubs in the world. Plus I'm doing this when a project is formed full of hope and in which we'll fight for everything.
"I want to wish a lot of luck to the club, and also to my teammates, because it's a group of wonderful people, and wish them the best luck in the world."
United fans will be hoping the Spaniard's arrival as Louis van Gaal's first major signing is merely the beginning of the Dutchman's restoration of the club.