The manager's four options out wide have a combined age of 128, a situation that he believes explains City's reluctance to push forward
Pep Guardiola lamented his ageing full-backs' inability to fit into his system at Manchester City after spluttering to a goalless draw against Manchester United.
United held on at the Etihad Stadium, having just one shot on target and 31 per cent possession, with City spurning several chances to strike a blow to their neighbours' hopes of finishing in the Premier League's top four.
Guardiola selected Pablo Zabaleta and Aleksandar Kolarov, 32 and 31 years old respectively, at full-back, with Bacary Sagna, 34, and Gael Clichy, 31, unused on the bench.