Marten de Roon, born on 29 March 1991 (age 35), is a Dutch central defensive midfielder now with Roma, where he wears squad number 15. His current market value is around £6m, according to Transfermarkt.
His career is overwhelmingly tied to Atalanta. Across 10 seasons with the Bergamo club, de Roon made 340 league appearances and scored 20 league goals, becoming a steady, durable presence in midfield rather than a player built on spectacle. That is not a criticism. Plenty of clubs spend years looking for that sort of reliability and end up with something noisier and less useful.
His spell in England with Middlesbrough was brief but productive enough on his own terms. In 2016-17 he scored four league goals in 33 appearances, his best league return in front of goal. It did not alter the wider shape of his career, which soon bent back towards Atalanta.
By 2026-27, de Roon had moved on to Roma, making three appearances in all competitions, including two in Serie A and one in the Champions League. He has also represented the Netherlands this season, making one World Cup appearance.
De Roon’s career has been that of a disciplined Dutch midfielder whose long Atalanta service remains the main story, with Middlesbrough and Roma forming shorter chapters around it.
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