Oscar de Marcos has extended his stay at Athletic and has also been handed a sizeable release clause designed to permanently banish long-term transfer interest from the likes of Manchester United and Manchester City.
According to reports from talkSPORT, the versatile Spaniard has been a target for both Premier League rivals but has now pledged his future at San Mames by penning a new three-year contract that means any potential suitors will have to pay at least £31.5 million if they wish to lure De Marcos away from La Liga in the future.
Boost for Athletic
A regular and reliable first-team fixture at Athletic, De Marcos has made well over 100 appearances for Los Leones since joining the club from Segunda Division outfit Alaves in 2009.
Capable of playing in midfield or being deployed at full-back, the notably consistent 25-year-old - who was a key performer in his club's impressive fourth-placed finish last term - will hope his decision to commit to Athletic until 2019 will provide a timely boost during a difficult period for the Basque outfit.
Despite last season's impressive exploits and a first appearance in the Champions League group stage since 1998, Athletic have endured a woeful start to the 2014/15 campaign and currently sit 18th having won just one of their opening seven league games.
Ernesto Valverde's side are not faring much better on the European stage, either, with a poor defeat to BATE Borisov last month leaving them rock bottom of a rather modest group that also includes FC Porto and Shakhtar Donetsk.
No Premier League switch?
Despite obviously having maintained a keen interest in De Marcos through to the most recent summer transfer window, it surely has to be considered extremely doubtful that either Manchester United or Manchester City - despite their respective financial capabilities - would be willing to commit to any future deal with the news of that release clause.
August's signing of free agent Bacary Sagna means that Manuel Pellegrini - who can also call upon the talents of one of the Premier League's most admired defenders in Argentine Pablo Zabaleta - is hardly in desperate need of another right-back, while Louis van Gaal acquired a similar player not too long ago in the form of former Ajax utility man Daley Blind.