The combative former Middlesbrough, Wigan and Sunderland midfielder spent last season in Holland with VVV Venlo until the Eredivisie campaign was cut short by the coronavirus pandemic, and has re-evaluated his future plans during lockdown.
He said: “With the current situation, the amount of time I have had at home and a great season in Holland, the time is right for me to look into going down the coaching route.
“Ordinarily I don't think it would have been this year, my aim would have been to play two more seasons.
“It was a difficult decision. If the season hadn't finished like it did in May then things might not have been like this, but I think this is right."