Campbell had his first senior spell on-loan at Royal Antwerp.
"We had a four-bedroomed flat and it was chaos," he recalled to the Daily Mail.
“There was me, Jonny Evans, Darron Gibson and Danny Simpson. Obviously, we were in bed at 9pm every night...
"I remember one day we were bored so went to the equivalent of Toys r Us, got super soakers, water balloons and were just driving down the streets watering people from the car.
"Then we got a call from the manager saying: 'What the hell are you doing?' It didn’t help that we were driving a car with the team badge on the side.
"It all helped me grow, though.
"Some of my first experiences in life were out there."