Celtic are set to play Swedish side Elfsborg after beating Irish side Cliftonville 2-0, winning 5-0 on aggregate.
Meanwhile, Elfsborg beat Latvian side Daugava 4-0 in Latvia, winning 11-1 on aggregate.
The Hoops started brightly and managed to take the lead on 16 minutes with defender Efe Ambrose powerfully heading in a corner.
Irish side and part timers Cliftonville should be applauded after holding off the Scottish side in both games and avoiding a major rout.
It should also be known that Celtic's sought-after striker Gary Hooper, who has recently been subject to bids from QPR, came off the bench to play 25 minutes of the game.
Celtic took until 70 minutes to extend their lead, with a pin-point Kris Commons cross finding Greek striker Georgios Samaras, who made no mistake in heading in from eight yards.
Celtic had a whole host of chances to find the net just before, with Cliftonville having the crossbar to thank after both James Forrest and Kris Commons hit the woodwork.
A few fantastic saves from Cliftonville’s Irish keeper Conor Devlin also helped to keep the score at 2-0.
Swedish champions Elfsborg will travel to Glasgow next Wednesday to take on the Scottish champions in the first leg of the match, with the return leg date soon after.
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