Complex sentence: The Müngersdorfer has been host to many important UEFA Cup matches.In the 1988 UEFA Cup, Bayer Leverkusen played FC Barcelona and Galatasaray played AS Monaco in the 1989 UEFA Cup.
Split into simpler sentences: The Müngersdorfer has been host to many important UEFA Cup matches. In UEFA Cup 1988-89, Bayer Leverkusen played against FC Barcelona, and Galatasaray against AS Monaco in the 1989 UEFA Cup.