The Chelsea squad was able to fly to Lille because that trip was already booked in advance, now the sanctions are in place fully and they are absolutely subject to the 20,000 pounds cap per trip. So unless they are allowed to pay for those trips out of some player's pocket which I doubt will be allowed, they have to travel by us, starting with this weekend's FA Cup game against Middlesborough.
Tuchel said it is not that they wanted luxury, traveling by bus on long trips will result in less ideal physical conditions for the players and make them more prone to injuries.
The only positive thing for Chelsea, as far as I can see, is perhaps the players now are extra-motivated to show the world that they can do. Chelsea itself is not the toughest opponent of all the teams in the quarters, being the reigning champions doesn't mean much. I'd rate Bayern and Liverpool and perhaps City ahead of them.