Yep - this is correct, because Marseille will have had to play another round to get to us again which negates the ‘playing someone from your own group’ straight away.
This is where we are now.
We can’t play another English team until the Quarter Final.
As has been pointed out, the other English teams won their group so they are seeded in the last 16 draw and we can’t play them anyway.
Yes, we could play Marseille again in the Last 16.