has backed Eamonn Dolan and his staff to steer the Royals to a positive result at Old Trafford on Saturday.
The midfielder has known Dolan for almost a decade, having graduated from Reading's Academy under his tutelage, and is also very familiar with Martin Kuhl and David Dodds - who Eamonn confirmed as his assistants
And although it's been an emotional week for Karacan, he has 100% faith in Dolan and co.
"Obviously, it's disappointing when you see your manager leave. Brian was amazing for us in the time he was here, but we have to move on quickly," he said.
"I've known Eamonn since I was 15 and worked with him day in day out. He has been brilliant - not just with me but helping the other lads come through the youth system.
"You know what you get from him - he makes it clear for each player before the game. He's a fantastic character, he's been here a long time and I'm sure he will do well for us.
"Kuhly and Doddsy have also been really good for us over the last few days. Kuhly was coaching alongside Eamonn back when I was in the Academy, and Doddsy has come in over the last couple of years and has been brilliant. I've trained with him a couple of times and he can bring something new to the team. But the main thing is Saturday, and we're all focused on that."
Barclays Premier League leaders Manchester United are the opponents tomorrow - the first of nine cup finals for the Royals - and Jem doesn't see why we can't defy the odds and leave Old Trafford with a result.
"They're top of the league and for me, the best team in the country. I played against them in the cup last month and we acquitted ourselves really well. We were disappointed to lose but we took the positives from the game. Hopefully we can get something out of the game because we see it as another opportunity.
"It's the best stadium in the league and it will be a pleasure to go there. It's one of the first games we looked for when the fixtures came out - but we've earned the right to play them this season.
"We've got nine games to go to keep ourselves in the league. 27 points are up for grabs and we'll be doing everything we can. It starts on Saturday - and we're confident we can get a point and maybe even three."