Career
Eisfeld began his career at the Borussia Dortmund youth academy. He previously played for SV Quitt Ankum and VfL Osnabrück before joining Dortmund. In 2009 he experienced a cruciate ligament injury.
After his recovery, he scored six goals in twelve matches for the Dortmund U-19 team during the 2011-2012 season.
Arsenal
After leaving Dortmund, he was signed by Arsenal on 31 January 2012 for a reported fee of £475,000 which was due as compensation for training him as an academy player. Arsène Wenger described Eisfeld as having "the attitude and technical ability to be a valuable addition to our squad."
= 2012-2013 Eisfeld was later selected for Arsenal"s 24 man squad to tour of Asia during July 2012.
In a match against a Malaysia XI, Eisfeld replaced Theo Walcott and scored Arsenal"s first goal of the game which finished in a 2–1 victory, in Arsenal"s favour. Eisfeld made a final appearance on the tour coming on as a substitute, once again, and scoring Arsenal"s equalizing goal in a match with Kitchee South Carolina, which ended 2–2.
Eisfeld made his professional debut on 30 October in a League Cup game against Reading, coming on as a substitute in the 58th minute.
= 2013-2014 Eisfeld again joined the Arsenal first team as they toured the Far East during the 2013-2014 pre-season, donning the number 34 shirt. He scored in the team"s first game against the Indonesian Dream Team. Eisfeld started in the Football League Cup tie against West Bromwich Albion, scoring the opening goal for the Gunners and his first for the Arsenal first team
His performance in this game prompted Wenger to compare him to former Arsenal midfielder Robert Pires.
Fulham
On 23 July 2014, Eisfield completed a permanent transfer across London to Fulham on a two-year contract, with an option of a further 12 months at the club VfL Bochum
Eisfeld moved to VfL Bochum on loan.
He made 12 appearances and scored once. At the start of 2015-2016 season the move was made permanent.
After a string of appearances from the bench, Eisfeld has now firmly established himself in the first team
He has made over 20 appearances and scored twice. Arsene Wenger has described Eisfeld as a player who is in the right place at the right time. He is also known for a good first touch and for his ability to stay calm in front of goal, Wenger has also said he is Germany"s future talent and soon enough, his name will be known.