Norwegian champions Rosenborg will have to show a serious improvement when they face Celtic after being on the verge of CL exit against minnows Dundalk.

The Scottish giants recorded a 6-0 aggregate win over Linfield and now head into the high-profile clash in very good spirits.

Glasgow Celtic enjoyed a remarkable season last term as they won the domestic treble without losing a single game in the process, but they were pretty disappointing in Europe.

The Bhoys finished bottom of their Champions League group, although it has to be noted they were placed alongside Barcelona, Man City and Borussia M’gladbach.

Celtic hope to do better this time out, although they still have two more hurdles standing between them and the Champions League group stages.

The good thing is there have been no major changes to the playing squad, although Olivier Ntcham joined from Genoa.

Scott Sinclair and Tom Rogic were especially impressive against Linfield, but strikers Griffiths and Dembele have yet to register their first goals of the season.

Full-back Emilio Izaguirre has now left the club, while Moussa Dembele should play despite being linked with a summer move to Marseille.

Probable starting line-up (4-2-3-1): Gordon – Lustig, Sviatchenko, Simunovic, Tierney – Brown, McGregor – Forrest, Rogic, Sinclair – Griffiths.

Norway’s most successful club have been on a downtrend of late, but they are slowly returning to the right track.

Rosenborg ended a four-year wait for the league trophy in 2015, before they managed to defend the trophy last season.

And while they already have a five-point advantage at the top of the league table, RBK were largely disappointing in the CL qualifiers against Dundalk.

Following the 1-1 draw in the first match, Rosenborg were in problems as the opposition opened the scoring, but they eventually managed to win the tie after extra time.

This is enough to suggest that RBK face a difficult trip to Glasgow, despite the fact that their league campaign is well underway.

Probable starting line-up (4-3-3): Hansen – Hedenstad, Reginiussen, Skjelvik, Meling – Jensen, Konradsen, Midtsjo – Jevtovic, Bendtner, de Lanlay.