Barcelona punish teams if given the chance and Manchester City must be careful, Ronald Koeman said.
Ronald Koeman believes Manchester City are capable of getting a result in Barcelona, but warned they would be quickly punished if they gave away chances.
Koeman's Everton held Pep Guardiola's side to a 1-1 draw in the Premier League on Saturday.
The result extended City's winless run to three matches ahead of their trip to Barcelona in the Champions League.
Koeman feels Guardiola's men are good enough to record victory over the LaLiga champions – but need to be wary.