Jeremie Frimpong has explained the Celtic detail that has stuck with him through his career to date, including at Liverpool.
The 24-year-old moved to the Premier League champions for around £40m during the summer transfer window.
That came after four-and-a-half-years at Bayer Leverkusen, where he became a Bundesliga champions as part of Xabi Alonso's history-making side.
Frimpong started out in Manchester City's academy. He made his big break in professional football when Neil Lennon signed him for Celtic in the summer of 2019.
The right-back quickly rose to stardom, with his 'Oh my days' catchphrase off the park, and lightening quick pace on it. He helped the Hoops to a treble that season.
However, after a little less than 18 months in Glasgow, with the Covid pandemic still firmly around, the Dutchman made it clear he wanted out of Celtic, and so, the Scottish Premiership side sold him to Leverkusen for £11m.
Now, he finds himself as part of Arne Slot's star-studded squad at Liverpool.
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Here, he has retained the number 30 - the same jersey he had at both Celtic and Leverkusen.
Speaking on the AXA Player Portraits podcast, the Netherlands international explained why his choice of number dates back to his time in green and white hoops.
He said: "Obviously, my first professional football number was 30 at Celtic, so I just kept it.
"At Leverkusen I was 30, and obviously coming to Liverpool, I’m known as 30 and it was free, so I was like…"