Midfielder Jon Mikel Obi has left Stoke City after the club cancelled his contract by mutual consent.
Mikel joined Stoke from Turkish club Trabzonspor having previously spent 11 years with Chelsea and half a season at Middlesbrough.
Boss Michael O'Neill said there was an agreement that he could leave for a "significant overseas opportunity".
He added: "John is a fantastic professional and was a huge presence for us last season both on and off the field, particularly with the young players in our first-team squad.
Mikel made 249 Premier League appearances for Chelsea, which ended when he left Stamford Bridge in 2017.