Played mostly in Germany, including Eintracht, bit higher level than Oli's playing days but nothing major, some Bundesliga, Kevin Keegan's Man City signed him early on but he returned to Germany without breaking through there. Never stayed more than a couple years at one club.
Started out in management in Luxembourg where he broke records and generally dominated, then had a brief un-notable spell in Belgium, then became Nagelsmann's assistant at Leipzig. Followed Nagelsmann to Bayern, left alongside him three years later.
After leaving Bayern he took over from Oli at Eintracht Frankfurt. 43% win rate with Eintracht, 50% win rate with Virton, and 70% win rate with Dudelange. Positive goal difference with all three (+194 at Dudelange, +12 at Virton, and +39 at Frankfurt.)