The Barca captain is worried another Champions League comeback — this time against Juventus — could be beyond the Catalans
Andres Iniesta admits it will be "impossible" for Barcelona to overturn their Champions League deficit to Juventus unless they show substantial improvement in the second leg.
The Spanish champions were beaten 3-0 in Turin by Massimiliano Allegri's side, with Paulo Dybala scoring twice before Giorgio Chiellini's second-half header.
Barca enjoyed more of the possession but struggled to place Gianluigi Buffon's goal under any real threat as they slumped to a second significant away defeat in a row in the competition.