Former Celtic right-back Jeremie Frimpong is attracting significant interest ahead of the summer transfer window.

What's the talk?

That's according to a report by German media outlet Sport1, who claim that both Bayern Munich and Borussia Dortmund, as well as some of the bigger clubs in England and Spain, are keeping a very close eye on the Bayer Leverkusen defender ahead of a potential move for the 21-year-old at the end of the season.

The report goes on to state that Leverkusen would demand a fee of at least €30m (£25m) in order to part with the Netherlands U21 international this summer, however, given the fact that Frimpong's current deal at the BayArena runs until the summer of 2025, the Bundesliga side are not desperate to sell the defender.

Postecoglou will be ruing Frimpong's sale

While hindsight is a wonderful thing, Peter Lawwell's decision to sanction the £9.9m sale of Frimpong back in January of 2021 appears as if it is a call that Ange Postecoglou will currently be ruing.

Indeed, the £33m-rated dynamo has proven over his 23 Bundesliga appearances this season that he would have been a key player under the 56-year-old Bhoys boss - scoring one goal, registering six assists and creating three big chances for his teammates, as well as helping his side keep four clean sheets and making an average of 1.3 key passes per game.

Furthermore, while it has been rumoured that Celtic did include a sell-on clause in the £25k-per-week right-back's transfer to Leverkusen - meaning the Hoops could be in line for a portion of the fee the German side receive for the Dutchman - should Lawwell have held fire on the sale of Frimpong until this coming summer, the Hoops could well have been in line for an injection of cash similar to the one received from the £25m departure of Kieran Tierney.

As such, Postecoglou will undoubtedly be regretting the club's decision to part with the 21-year-old - who Simon Rolfes claimed has "huge potential," Rudi Voller dubbed "lively" and Neil Lennon claimed is "incredible" - prior to his arrival at Parkhead last summer, as not only has the Greek-Australian been deprived of working with an exceptionally talented player but also a potentially summer-defining sale.

In other news: "Massive blow": Journalist drops concerning Celtic injury claim, fans will be worried