Jason Holt insists Rangers have already proven they are good enough to mix it with Celtic this season.

Mark Warburton’s men face the biggest test of their campaign on Sunday when they go head-to-head with their Old Firm foes in the semi-finals of the Scottish Cup.

Ronny Deila’s team will be the fourth Premiership side the newly-crowned Championship winners have faced this term.

They suffered defeat against St Johnstone in the League Cup but, after overcoming Kilmarnock following a replay at Rugby Park, Gers set up their Hoops clash by crushing Dundee with a 4-0 win in the last eight at Ibrox.

But top-flight champions-elect Celtic have already been installed as firm favourites for this weekend’s duel.

However, after backing up their league triumph with Sunday’s 4-0 Petrofac Cup final victory against Peterhead, midfielder Holt insists confidence is running high at Ibrox.

He said: “We’ve now picked up two medals in a week and I’m delighted – over the moon. You come to a club like Rangers to win silverware and we have managed to do that this season but there are still big games coming up so we look to them.

“We’re really looking forward to the Celtic game. They will be a really big test. They have quality players and they are a good side so they will give us a test but we just need to do the things that we are good at and hopefully it comes good on the day.”