The Blues are evidently keen on adding a new striker to their ranks, but it seems Manchester City are closely watching the 21-year-old as he continues to shine.
But Barcelona are said to be preparing a €50m bid for Jovic as they seek a long-term successor to Luis Suarez, offering Eintracht the chance to make a significant profit.
But the shimmering homegrown talent netted twice more either side of a Ruben Dias header to become the youngest player to hit a Europa League treble, although Goncalo Paciencia did later give the visitors a handy second away goal to take back to Frankfurt.
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"Above all, Luka wants to play football and he does not know if he can do it at Barcelona".
Frankfurt are now on course for a top-four finish in the Bundesliga, which would see them qualify for the Champions League next season.
Jovic - tipped to sign for Adi Hutter's men on a permanent basis at season's end - responded 20 minutes later, Ante Rebic breaking into the box and selflessly squaring for him, but parity lasted less than three minutes.
Yet Jovic's father told Bild that his son has always been grounded and turned down offers from Borussia Dortmund, Schalke and Arsenal as a boy.