Liverpool's negotiations went well, signing Bayer Leverkusen's Jeremie Frimpong.
The 24-year-old hopes to move to Anfield, where he has a €35 million release clause.
He can play in right back and right wing and is highly rated by Reds Boss Arne Slot.
The Celtics have terms to sell, worth about £5 million.
The Dutch international was a key member of Leverkusen, who won Germany's domestic doubles last season.
Since joining Leverkusen in January 2021, the former Manchester City youth player has provided 30 goals for the club in 190 games and 44 assists for the club in all games.
Leverkusen signed Frimpong from Celtic in January 2021, worth up to £11.5 million.
In September 2019, he moved from Manchester City Academy to Celtics for £300,000.
Frimpong told Leverkusen that he wanted to leave the club.
Sky Sports News Previous reports said if the club decides to sign right back to replace Trent Alexander-Arnold This summer.
Alexander-Arnold announced last week that his contract will expire on June 30.
Conor Bradley, 21, will return to the end of the season with Liverpool's first choice when he has no future plans for Alexander-Arnold.
Peter Smith of Sky Sports:
“Trent Alexander-Arnold and Jeremia Frimpong One of the top players in the highest position in the world football game - but their style is very different. if Liverpool After signing the Dutch this summer, he can change the game plan of their offense.
“Although Alexander-Arnold is known for his passing array, his teammates bring the ball into the box or Crossfield’s delivery, while Frimpong improves the team’s team with his runs and picking them up.
"These statistics illustrate this, and over the past two seasons, the two players have compared the takeaways. Alexander Arnold has passed 16 goals in this period, with Fripen only two. However, the Dutch tried 168 catches and Alexander Arnold only 82.
"This difference can also be seen in the two's heat map. Although Alexander-Arnold often does a lot of work in deeper areas - that's what Arne Slot has characterized this semester, and his all-back sometimes backs back - Frimpong looks like he receives the ball or drives the ball to the advanced area.
“Of course, Frimpong was once the right-wing guard for Xabi Alonso at Leverkusen, so the higher position has been able to be reflected with a lot of goals and assists.
"How will he adapt to Liverpool's role is an interesting question? Mohamed Salah talked about how he lifted him out of many defensive responsibilities this season. So if Frimpong meets those right-wing areas, will Salah fall into a more central role?
"Liverpool will need to adapt with Alexander-Arnold's departure. Frimpong will offer them different opportunities and they hope to defend their Premier League title next season."
Real Madrid still hasn't made a proposal to sign Alexander-Arnold after contacting Liverpool for a week of playing for them at the club's World Cup next month.
England International joins Real Madrid as a free agent, but they hope he moves in early June so he can participate in FIFA's new expanded 32-team tournament.
If Madrid wants him to play in the group stage in the United States, there is a need to make an offer.
They called Liverpool within hours of the announcement last Monday night in Alexander-Arnold.
They discussed his earlier versions, but made no offer.
Alexander-Arnold received a hostile reception in a second half of the bench with Arsenal on Sunday's 2-2 draw.
Real Madrid also hopes Xabi Alonso will be their new head coach to replace Carlo Ancelotti in their opening game against Al Hilal in Miami on June 18.
Alonso announced Friday that he will leave Bayer Leverkusen at the end of the season.