The highly-rated 19-year-old was signed by the Reds at the start of January but will stay with Red Star Belgrade on loan until the end of the season.
Red Star sporting director Zvezdan Terzic had previously claimed Grujic would be given the No. 8 shirt, but the teenager insists any player in the world would find it hard to replace Gerrard at Anfield.
“It would be very difficult,” he told Blic when asked if would inherit the No.8 shirt.
“I thought it was possible, but no player in the world, to come from Real Madrid or Barcelona, would want this burden.
“It is better to start slowly and then build. I'll have maybe 35, like at the beginning with Star, or 88 - definitely something that has to do with an eight.”
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“Every week I hear from people from Liverpool, I've already got a meal plan and workout,” he added.
“They are committed to each player, I was thrilled, and only now realise the size of the club. I keep getting messages from the fans.”