Cardiff mindful over defenders before Norwich tie

"With regard to Tuesday, with the players who have been doing all the training and all the playing – the back four we played [at Derby] are the only ones we have doing all the training and all the playing at the club – we have to be mindful of not pushing too far, too soon in the season."Barry-Murphy may also look to Cardiff's under-21 squad for further back-up players as he attempts to protect his frontline options before next weekend's Championship meeting with Sheffield United.Having returned for a second loan spell from Liverpool, Scanlon (pictured above) played 80 minutes in Cardiff's draw with Wrexham last Monday and then managed the full game at Derby."[It was] Calum's first 90 minutes in two-and-a-half years so we have to be careful of exposing players like that again," Barry-Murphy added."But we haven't got many options at the moment."Jack Moylan suffered a dead leg at Derby, but Cardiff are optimistic he will not face a lay-off.Joel Colwill, David Turnbull, Isaak Davies and Callum Robinson are among those who could come into contention for a start against Norwich having begun on the bench against the Rams.Barry-Murphy fielded something close to a first-choice side in round one of the EFL Cup, when Yousef Salech scored twice in a 3-2 victory over Swindon Town earlier this month.Cardiff reached the quarter-finals of the competition last season, their best run since they were beaten in the final by Liverpool in 2012.