As an Eintracht fan (will be at the next home match), I would frankly bow to Kovač (and the brother Robert) for the job he has done in Frankfurt.
When he took over from Veh in March, the team was dead and buried and heading to BL2. Instead, even when three wins from the last four matches were required just to make the play off spot, he still told the players how much he believed in them. The results this season so far have been nothing sort of extraordinary - wins over Schalke, Leverkusen, Dortmund, Ingoldstadt, a resurgent Köln whilst coming back to draw with ten men v Bayern. He's also a lucky manager and we all know Napoleon's quote . . . To think that in May, Frankfurt were 20 minutes away from BL2 football this season.
Of course, and without getting carried away, there are very tough challenges ahead.
This brings me to my point about Kovač himself. His results (in his first club job) won't have gone unnoticed elsewhere. . . Even at somewhere like Bayern (whom he used to play for). I can't see Ancelotti being around for next season in Bavaria.
Could Bayern go for Kovač?
Rumour has it they're interested in Klopp.
How realistic is this?
Would Klopp leave?
Are there other potential Bayern managers out there? Nagelsmann????
Are there other clubs out there with more money and resources who'd be more than happy to tempt Kovač?