Sergi Roberto has agreed to join former teammate Cesc Fabregas at Como on a free transfer after leaving Barcelona, a source confirmed to ESPN.
Roberto, 32, announced earlier this month that he would not be renewing his contract with Barca after his previous deal expired in June.
Ajax and Fiorentina were among the other clubs to show interest in Roberto but a source said Como coach Fabregas, a former Barca player, played a key role in persuading the midfielder to opt for the Serie A newcomers.
Roberto spent 18 years at Barça after joining as a teenager and played 373 games for the first team.
He was captain of the club last season and there was talk of renewing his contract, but the financial situation of the Catalan club could not guarantee his registration in LaLiga.
He joins a growing contingent of Spanish players at Como, with Fabregas also adding Pepe Reina and Alberto Moreno to the squad this summer, while Real Madrid midfielder Nico Paz is also set to join.
Former Manchester United and Real Madrid defender Raphael Varane is also one of more than 10 new arrivals, alongside Alberto Dossena and Andrea Belotti, among others.
Como return to Italy's top flight for the first time in 23 years after securing promotion from Serie B last season.
They began their comeback with a 3-0 defeat to Juventus at the weekend.