Possibly mate. We'll never know...but we couldn't beat Borussia or Panathinaikos at Goodison, so, beating the greatest team of the 1970s was a big big ask. Obviously The Catt maybe wasn't quite equipped for European football as much as we should've been (his record is dreadful, quite frankly). Also, with Red Star Belgrade, they had many of the players who put the RS to the sword in 1973...prompting Shankly to evaluate that, maybe, they needed to change their approach vs European teams...which Paisley then adopted, playing a more 'possession' based game, rather than more direct football, resulting in their horrible euro success that followed.