In July 2014, Lumor finally had the opportunity of going to European football when he was loaned to FC Porto, playing for a season in the Junior team.
In the following season after impressing in the junior teams of Porto, he was loaned again to Portimonense[1] and eventually in February 2016 exerted the option to buy the rights of the young left back.
Bundesliga, where he played regularly, but at the end of the season he returned to Portimonense after making his debut in Ghana's main national team.
[4] Lumor signed a long-term contract with Sporting CP, with the goal of replacing the Argentinian Jonathan Silva that had been loaned to AS Roma.
On 31 July 2019, after a six-month loan spell at Göztepe,[5] Lumor joined La Liga side Mallorca also in a temporary deal.