Around 250 Spurs fans are expected in Russia, and both the UK Foreign Office and the club have advised them not to show their colours in the city.
"We badly wanted to reach the final, but Atletico was more efficient in front of goal. We have plenty to rectify," Vidal said.
Pep Guardiola's Manchester City travel to Celtic in the Champions League with both the manager and club on the cusp of some big milestones.
Real Madrid coach Zinedine Zidane has shown a reckless side to his management, but a trip to Borussia Dortmund is no time to replicate that.
There are a number of big games in Europe this week, with the pick of the action coming from Spain as Atletico face Bayern.