Celtic have been linked with a sensational swoop for Donny van de Beek.
The midfielder has endured a frustrating time at Manchester United since joining the club three years ago.
Injuries and a lack of form have seen the Dutchman fall down the pecking order at Old Trafford under several managers.
And it seems that the 26-year-old's future lies elsewhere.
He has spent time on loan at Everton in recent seasons, and he could well be headed out on loan again having yet to establish himself in Erik ten Hag's plans.
According to 90min, Celtic are one of a host of clubs said to be monitoring his situation.
Wolves, Nottingham Forest and Crystal Palace are all keen too, with Seville, Nice and teams in Serie A interested.
READ MORE: Ange Postecoglou bristles at Celtic to Spurs 'step up' poser
Meanwhile, Ange Postecoglou has brushed off the suggestion working in the Premier League was a step up from his time at Celtic in Scotland.
The former Parkhead boss was quizzed on the difference between working in the Scottish Premiership and England's top flight.
But Postecoglou insisted "every challenge is the same" as he cited the must-win situation in Scotland during his time at Celtic.
Referencing the Scottish Premiership title race, Postecoglou suggested he would have been out of a job if he finished second to Rangers during his time in Glasgow.
And he insisted just as managing Tottenham represents a "massive challenge", so too did leading Celtic.
Responding to the question in his first press conference, Postecoglou said: "I don't know about step-ups. I had the same question when I got to the SPFL but I coached at a World Cup so I've coached in different leagues.
"I think every challenge is the same to be honest, it's relative to the competition you are in."
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