Career
Lorenzen joined SV Werder Bremen in 2013 from Holstein Kiel. He made his Bundesliga debut on 5 October 2013 against VfB Stuttgart. He replaced Eljero Elia after 88 minutes in a 1–1 draw in Stuttgart.
On 13 December 2014, Lorenzen played his first Bundesliga match as part of the starting lineup and scored in a 3–3 draw against Hannover.
On 28 January 2015, Lorenzen sustained an injury to the meniscus of his right knee before undergoing surgery two days later. Lorenzen had his first appearance of the 2015–2016 season in Werder"s 0–1 home defeat to Bayern Munich on 17 October 2015 before being substituted after 59 minutes.