Lumb was born in Aarhus, Denmark to a Danish mother and an English father.
He is left-footed and plays left back.
He came from AGFs 1988-born Danish Youth Championship-winning team, a side that included Morten Beck Andersen, Frederik Krabbe, Michael Vester, Niels Kristensen, Jesper Blicher and Anders Syberg.
Lumb was named the young gun "Shooting Star" of the autumn season 2007–08 by the Danish newspaper Ekstra Bladet.

Despite his youth age, Lumb has played more than 100 matches for AGF in the Superliga and First Division.

On 11 January 2010, it was reported on AGF's website that he was moving to Zenit Saint Petersburg in the Russian Premier League.
Lumb was born in Aarhus, Denmark to a Danish mother and an English father. He is left-footed and plays left back. He came from AGFs 1988-born Danish Youth Championship-winning team, a side that included Morten Beck Andersen, Frederik Krabbe, Michael Vester, Niels Kristensen, Jesper Blicher and Anders Syberg. Lumb was named the young gun "Shooting Star" of the autumn season 2007–08 by the Danish newspaper Ekstra Bladet.
Despite his youth age, Lumb has played more than 100 matches for AGF in the Superliga and First Division.
On 11 January 2010, it was reported on AGF's website that he was moving to Zenit Saint Petersburg in the Russian Premier League.
Michael Lumb (footballer)