After spending three seasons in the Danish 1st Division with AB, Namli signed a two-and-a-half-year contract with Dutch club Heerenveen in January 2015 following a successful trial.[1] There was little interest, and no bids, from any other Danish clubs,[1] something which surprised Thomas Nørgaard, his manager at AB, who praised Namli's talent.[2] He was previously listed in September 2014 as a star for the future by Danish magazine BT.[3]
After two seasons in Heerenveen, it was reported in June 2017 that Namli had signed a contract with another Dutch team, PEC Zwolle.[4]
On 15 January 2020, the Colorado Rapids acquired Namli on a two-year loan from FC Krasnodar.[6] Namli appeared in 18 matches, including MLS Cup Playoffs, and adding two goals and four assists,[7] and he also completed 66 dribbles, which was the second-highest in MLS that season.[8] Namli was named to the MLS Team of the Week in Week 11 for his two-assist performance to help Colorado defeat Real Salt Lake,[9] and reclaim the Rocky Mountain Cup.[10] Following the 2021 season, Colorado declined their purchase option on Namli.[11]
On 11 January 2022, he joined Sparta Rotterdam back in the Netherlands on loan until 30 June 2022.[12] On 2 July 2022, Namli's agent stated that his contract with Krasnodar had been terminated.[13]
On 21 July 2023, Namli returned to PEC Zwolle on a one-year deal.[15] After leaving the club at the end of the 2023–24 season, on 9 September 2024 Namli returned to Zwolle once again, on a contract until 30 June 2025.[16]