Not good, according to statistics put up by The Telegraph.
Since United's long-odds Treble (1998-99) a decade ago, only four of the 14 finalists have managed to win their national title in the same season.
The Champions League is highly taxing for champions - as teams with nothing else to play for often devote their entire resources to be the continent's best.
That would be Liverpool and Barcelona, who are out of their domestic championship reckoning again.
The Reds are expected to rest most of their first-team players against Birmingham City this weekend to prepare for Wednesday's second leg.
In contrast, Chelsea and United will be spending considerable energy slugging it out for the English title.
Hence, it is of little surprise that each of the seven finals since 1999 has featured at least one team from outside the top two in their domestic standings.
Securing a place in the lucrative competition for the following season was the only pressure for each of them in the lead-up to the final.
Champions League finalists
(Final domestic league position in brackets)