 On the 25th, he was loaned to fellow Championship side Middlesbrough until the end of the campaign, with left-back James Husband moving in the opposite direction.He scored his first goal for the club on 8 May, coming on as a 73rd-minute substitute for Lee Tomlin and netting a last-minute winner for a 2–1 away win over Brentford in the play-off semi-finals; he was unused in the final at Wembley Stadium, a 0–2 defeat to Norwich City.On 28 August 2015, Amorebieta returned to the Riverside Stadium for the entirety of the season, with Husband again being lent to Fulham for a month as part of the deal.