The Netherlands Under-21 international joined the Swans a week before Mowbray's appointment as Middlesbrough manager, after failing to impress former boss Gordon Strachan.
He went on to score twice during his time at the Liberty Stadium, including the winner in the derby against Cardiff before his loan spell expired last Wednesday.
And although the new Boro boss admitted the former Sparta Rotterdam player would be unlikely to continue playing as striker, a position he has enjoyed success in his month at Swansea, Mowbray remained adamant the youngster would offer a new dimension to his side.
"He is a wide player with some pace so we can utilise his talents in our team. He's got a part to pay in weeks to come.
"He is fairly versatile and comes back with a bit of confidence from the goals he scored at Swansea."
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