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.

[4][5] Lorenzen had his first appearance of the 2015–16 season in Werder's 1–0 home defeat to Bayern Munich on 17 October 2015 before being substituted after 59 minutes.

[3] In late July 2017, Lorenzen joined Eredivisie side ADO Den Haag on a two-year contract.

In March 2021, after trialling with AFC Wimbledon in September 2020,[2] Lorenzen signed a one-month contract with Indonesian club Persela Lamongan of the Liga 1.

[9] Free agent Lorenzen joined Wormatia Worms, newly promoted to the Regionalliga Südwest, in September 2022.