Rangers' goalkeeper Jak Alnwick insists confidence is high in the Ibrox dressing room ahead of Sunday's latest meeting with Celtic, despite a 4-0 defeat in the Scottish Cup semi-final.

Alnwick, 24, is expecting to start the derby, with regular number one Wes Foderingham sidelined with a shoulder injury.

"We know we weren't good enough on the day," he said of the 4-0 defeat. "We had prepared right, but then on the day we just didn't turn up.

"It was a hard defeat in the semi-finals but it's about reacting and what you do next, if we go out on Sunday positively then we've got a chance.

"We don't want to look in the past, we want to give the fans something from us. We are concentrated on winning the game - there are no issues with confidence."

Spats between players broke out in the Rangers dressing room after the semi-final, leading to club suspensions for Kenny Miller and Lee Wallace.

But Alnwick believes the squad is united and behind manager Graeme Murty, despite speculation over his future.

"There's a lot of experience in there," he said. "Graham Dorrans - he's played Premier League, he knows what this is all about.

"We've got Jamie Murphy, Russell Martin and Bruno Alves - who has won trophies.

"As well, a lot of the younger lads like James Tavernier have had experience and been at this club for a long time. We're all together.

"We have just got to get behind the gaffer that's in charge and have respect for him.

"He's the man in charge just now - we're going to give everything for him."

Alnwick has only made two appearances since joining Rangers on a three-year contract in January 2017.

He stepped in last week and helped his side to a 2-1 win over Hearts and insists he's not daunted by the prospect of facing Celtic.

"You come up here to a big club like Rangers to play in these sort of games, it's what you dream of and everyone would love to play in these games," he said.

"So, if I get that chance then I'll be buzzing and ready to go.

"I've played in a lot of big games when I was at Newcastle. I played against Chelsea, Arsenal and Manchester United.

"But, across the whole, this is the biggest one in terms of how much fans want to really win the game and I think it is right up there for me personally."