Real are bidding for a record-extending 13th European Cup and third in a row, while five-time champions Bayern were the last side to lift the trophy three years on the spin 42 years ago.
Bayern Munich have confirmed that Niko Kovac will take over as the club's new manager in July.
"We are convinced that he is the right coach for the future of FC Bayern", Salihamidzic said.
Madrid, the two-time defending Champions League winners, advanced to the semifinals of Europe's top club competition for an eighth straight year on Wednesday after Cristiano Ronaldo scored a penalty against Juventus in the 97th minute.
So it's perhaps no surprise Frankfurt are unhappy, with their sporting director Fredi Bobic speaking out on Bayern's shady approach.
Thomas Tuchel was reportedly in the running for the vacancy only for Bayern CEO Karl-Heinz Rummenigge to confirm the former Borussia Dortmund coach - strongly linked with Paris Saint-Germain - has agreed to move elsewhere. Now he has them in contention for Champions League qualification.
Kovac will need to adjust to instructing established stars at Bayern, rather than young players of promise still eager to learn, and he will be expected to maintain the club's high standards.
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Born in Berlin to Croatian parents, both brothers played for the Croatian national team as well as Bayern. They also met in last season's quarterfinals, when Real triumphed, 6-3, on aggregate. But Kovac's men could repeat the trick this term - they face Schalke in the semi-finals next week and he may yet meet his new club Bayern in the final.
"I'm having fun, I'm in the form of my life and assume I'll be at the World Cup this summer", said Wagner.
"Wedding is a working class area, a small district with lots of foreigners, but Germans too", he told the Frankfurter Allgemeine Zeitung in December when asked about his upbringing.
And just last week, Frankfurt and Kovac effectively denied there had been any contact from Bayern and were insistent he was staying put. While Bayern's squad is strongly German-flavoured, this experience can only stand him in good stead at the Allianz Arena.