To be absolutely honest, I think you'd find that we'd sell out our allocation for the European Cup final whoever and wherever we were playing.
The old European Cup was only for Champions, not Champions and a bunch of also-rans contrived to ensure that the 'favourite' teams had the best chance of making a fortune.
The old European Cup was a knockout tournament based on the FA Cup, giving every club an equal chance of winning it. The current incarnation of the tournament gives a shit team like the rags a better chance of making a fortune than a team who actually won their national league.
It's a shit tournament, beloved most by multi millionaire club owners, TV companies and star struck football tourists.
It is what it is, so we may as well try to win it. However, I'd rather win the PL any day of the week. If we were to risk losing the PL by prioritising the CL, I'd be beyond disappointed by the club.