Luis Enrique has confirmed he will stay on as the head coach of the treble winners Barcelona by signing a contract extension. He is now committed to the club until the end of the 2016-17 campaign.

A degree of doubt had surrounded his future before the Barcelona club president Josep Maria Bartomeu said on Tuesday that a deal due to expire next year had been increased by a further 12 months.

Enrique, who played for both Barcelona and Real Madrid before turning to coaching, led Barcelona to the Champions League, Primera Division and Copa del Rey titles in the 2014-15 season.

The club tweeted: “President Bartomeu has announced Luis Enrique’s contract extension for another season.”

Bartomeu was quoted as saying in his end of season address. “The treble symbolises more than any other thing, the unity of the Barcelona family.”

Enrique replaced Tata Martino last summer and made a spectacular impact as Barcelona became the first club in Europe to win a treble twice. Pep Guardiola steered Barcelona to their first six years ago.

Despite matching that haul, Enrique had been reluctant to commit to the next season although he was under contract for it.

Bartomeu said on local radio this week that he had done “a magnificent job” and that he wanted Enrique to stay on. The manager will now attempt to follow the heroics of the last 12 months with achievements in a similar vein.

He was able to bring in Luis Suárez last summer to form part of a three-man frontline, alongside Lionel Messi and Neymar, that terrorised defences in Spain and across Europe.

The treble was secured by Barcelona’s 3-1 win over Juventus Berlin on Saturday.

Enrique told Barcelona’s website: “How could we be anything other than very happy? After the last year we’ve experienced, with difficulties but with a great final result, we’re more than excited about returning in the hope of winning titles.

“Anything that comes close will be more than exciting.”