Celtic will face Rangers twice in a fortnight with potentially the domestic treble at stake for Ange Postecoglou's men.

The Aussie's side is currently six points clear in the Scottish Premiership title race with the five split games to come.

Both Glasgow giants will go head-to-head on Sunday at Hampden Park in the Scottish Cup semi-final.

The two sides will then meet at Celtic Park on May, 1, which could be a possible league decider.

The men from Glasgow's East End are in pole position to complete a clean sweep.

In an ideal world, the green and white hordes would be celebrating three victories in the league and Scottish Cup trilogy having already gone to Ibrox and disposed of their city rivals to open up a healthy lead at the top of the table.

Can Celtic afford to lose one of the remaining two matches against Rangers?

If so, which one would the supporters choose?

Meanwhile, Spanish side Villarreal has emerged as a potential spanner in Celtic's Champions League world and gaining automatic access to the group stages and a £40 million jackpot in the process.

READ MORE: Celtic boss Ange Postecoglou must be backed in quest to make Champions League impact - Alison McConnell

The La Liga aide knocked out Bundesliga stars Bayern Munich to advance to the Champions League semi-final stage leaving the potential automatic spot in next season's Champions League group stages at risk.

The winner of this season's Scottish Premiership will likely go straight into UEFA's top club competition next term.

The only caveat to that outcome, however, is if the winners of this season's Champions League have not qualified via their domestic league, then this would spell trouble for Scotland's champions.

It would mean that Celtic - should they win the title - would still have to go through qualification, entering the play-off round.

Villarreal's presence is a praying mantis.

With Liverpool already 3-1 up on Benfica from the first leg of their last-eight tie, Jurgen Klopp's side is odds on to go through to the semi-final and play Villarreal.

Every Celtic supporter would then have to get behind the Reds for the semi-final clash.

Elsewhere the Celtic B slumped to a 1-0 defeat against Rangers B at Celtic Park last night.

Join Sean Martin and Tony Haggerty on the video debate below as they discuss all matters Celtic.