Celtic defender Dedryck Boyata could potentially earn around £2million-a-year with a move to German side Hertha Berlin, reports the Scottish Sun.
The Belgium international is out of contract at the end of the season and looks to have played his last game for the Bhoys after being ruled out for the rest of the campaign with a knee injury sustained in the Old Firm derby at the end of March.
Hertha are prepared to offer Boyata around £40,000-a-week to move to the Bundesliga side as well as offering a bumper signing-on fee but Celtic boss Neil Lennon is hoping to persuade the defender to stay at Parkhead.
The 28-year-old joined the Hoops in a £1.5m deal from Manchester City during the summer of 2015 and has gone on to win seven major honours with the club but he looks to be heading for the exit on a free transfer when his current deal expires in June.
Boyata, who won the FA Cup in 2011 while with City, has made 135 appearances and scored 15 goals since arriving at Celtic Park.
The Glasgow club are on course to win the Scottish Premiership for the eighth time in succession after moving 11 points clear of second-place Rangers with a goalless draw with Livingston on Saturday.
They will have to wait until the league splits into two to wrap up the title but Celtic are on course for their third domestic treble in successive seasons.
The Bhoys clinched the League Cup in December as a single goal from Ryan Christie fought of Aberdeen which was to be the last trophy under the stewardship of Brendan Rodgers, who departed for Leicester City two months later.
Celtic face the Dons in the Scottish Cup semi-final on Sunday before returning to league action with a trip to Hibernian a week later.