Pep Guardiola feels Manchester City must win games like this weekend's at Watford to prove they can join the European elite.
City opened their Champions League campaign with an emphatic 4-0 victory at Feyenoord in midweek, an impressive display that came just four days after a 5-0 hammering of Liverpool.
But Guardiola's men won just two of the six Premier League games that immediately followed a Champions League group game last season and the City boss feels his team must cope better with tough schedules.
Guardiola said: "It will be a demanding game, especially coming just three days later.