Hull have confirmed that Marco Silva has quit the club.
The Portuguese boss replaced Mike Phelan at the KCOM Stadium in January and almost inspired a miraculous turnaround to keep Hull in the Premier League.
Silva had a meeting with owners Assem and Ehab Allam on Wednesday night before telling them that he was intending to activate the release clause in his deal.
The club confirmed the news on Thursday evening, expressing their disappointment, but thanking him for his efforts.
“Although disappointed by Marco’s departure, we would once again like to place on record our appreciation of his efforts and those of his support staff,” the club said in statement.
“Despite only being in charge for a short period of time, the 39-year-old became a firm fans’ favourite and will be forever remembered for his efforts to maintain our Premier League status.”
Silva failed to save the Tigers from slipping into the Championship after finishing 18th – falling short in the final week of the season.
Hull won six out of the 18 Premier League games with Silva at the helm.
His final match saw his already-relegated side suffer a 7-1 mauling to Tottenham – with Harry Kane bagging a hat-trick.
Silva saw his side lose their last three games – as his profile went up.
Southampton, Watford and Crystal Palace were all keen on making Silva their new managers – but homeland side Porto appear to top the queue.
A move back home wold mean a leap to Champions League football.
Silva arrived in England having earned a reputation at Estoril, Sporting Lisbon and Olympiacos.