Manchester City manager Pep Guardiola says his side "are not ready" to win the Champions League, claiming "the feeling" from the fans that the team must win the competition is missing.
City have gone out in the last 16 and quarter-finals of the competition in the Spaniard's two seasons in charge.
"It's one important thing to win this kind of title, you have to be pushed," said Guardiola.
"Not just by the manager, by everyone surrounding Manchester City."
He added: "And still we don't have that feeling, the feeling that the fans are pushing that we have to win the Champions League."
City were knocked out of the Champions League by Monaco in Guardiola's first campaign in charge then by Liverpool in the last eight last season.
In their latest campaign, they go into Tuesday's game at Shakhtar Donetsk second in Group F with three points from two games.
"We are going to put in all effort to win this competition, but from what I saw last season we are not ready, that's what I feel," said Guardiola, who won the Champions League twice with Barcelona.
"That doesn't mean we are not going to try."
Manchester City defender Kyle Walker is in contention to play in Ukraine having recovered from a groin injury.
The right-back missed Saturday's 5-0 win over Burnley with the problem.
"If they are here it is because they are ready to play," said Guardiola.
Midfielder Ilkay Gundogan remains unavailable because of a hamstring problem and Brazil full-back Danilo is also sidelined having injured an ankle on international duty.
The two sides meet in the groups stages of the competition for the second consecutive season and Shakhtar manager Paulo Fonseca says there are no weak links in the City side.
Fonseca said: "We will need to pay attention to all the players in the City team. They are very strong players and any of them can give us problems.
"We know it is going to be difficult and we will probably have to suffer a bit without the ball, but we will try to find ways to play our game and attack.
"Our principles remain the same, no matter who we play against. It doesn't matter who we are playing against - Manchester City or any other team."
Simon Gleave, head of sports analysis at Gracenote
Manchester City's win in Hoffenheim coupled with Olympique Lyon's failure to beat Shakhtar Donetsk in France has brought Manchester City's chance of progress back to where it was before they lost at home to Lyon.
The Euro Club Index gives City an 88% chance of making it through to the knockout phase of the Champions League, making them the most likely of the four English teams - Man City, Tottenham Hotspur, Liverpool and Manchester United - to get there.
A return of at least four points from the next two matches against Shakhtar will make City's progress more or less certain.
Head-to-head
Shakhtar Donetsk
Manchester City