Inaki Williams has affirmed his commitment to the La Liga club by signing a nine-year deal.
The 25-year-old has agreed a bumper contract which keeps him at the club until 2028 and includes a staggering €135 million (£125 million) release clause.
Williams said: “Hopefully great things can come because what I want to make this club bigger, if possible.
“The club has always bet on me, it has given me everything, I feel it is my home.”
Williams has successfully out-done Alan Pardew, who signed an eight-year deal when he was Newcastle boss back in 2012. He lasted just two of those years.
However, Williams’ contract is not the longest to have been dished out to a player. Denilson joined Real Betis in 1998 on a ten-year deal and left for Bordeaux in 2005; four years before his deal was due to expire.
Saul Niguez signed a nine-year deal with Atletico Madrid in 2017.
Williams has made over 200 appearances for Bilbao and featured in every league game last season, scoring 13 goals.
