Leicester City have been unable to string good performances together this season but a win at Porto this week could carry over into the league.
Napoli coach Maurizio Sarri says his team are in Portugal to beat Benfica on Tuesday night, even if a draw would be enough to take them through.
"It's normal, if you go to a new club, a new country, you need to get to know the language, the coach, the philosophy, the squad," said Xhaka.
Paris Saint-Germain coach Unai Emery has admitted Angel Di Maria can do more for the French champions than he recent performances have suggested.
"It is normal that my son, my father or my sister says that one day I will coach Inter. It is nothing new, nor is it news," Simeone said.