The Dutch winger, thus, become the seventh foreign signing for the club ahead of the new ISL season.
Lumu began his professional career with Dutch outfit Willem II, where he made his debut at the age of 16. The winger soon went onto become the youngest goal-scorer in the club's history in the Dutch Eredivisie when he found the back of the net later that year.
Lumu's impressive performances saw him earn a call-up from the Dutch national side for the UEFA U-17 European Championships in 2012, where he found the back of the net as Netherlands went on to lift the title.
Hull City and Derby even took the highly-rated attacker on trial where he was involved in a few friendly matches.
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The Breda born winger then completed his move to Bulgarian side Ludogorets Razgard where he won the Bulgarian League, the Bulgarian Cup and the Bulgarian Super Cup in the same season.
"I am absolutely delighted to have Lumu in the side. He is quick, skillful and has an eye for goal, everything that you need in a quality attacker.
Known for his blistering pace and his ability to create chances, Lumu's versatility to play anywhere in the attack will make him a potent threat for the opposition defence.