Career
Early career
While still at Esbjerg, he went on a trial with Arsenal, in the end, however, he decided to move to the Football Club Midtjylland-academy. A year and a half into his time at Midtjylland, he went on a trial with Fulham in November 2011. A few months later, in January 2012, he moved to Fulham on a permanent deal.
Fulham
On 30 January 2014, Christensen signed a three-year contract extension, keeping him at Fulham until the summer of 2017.