Carragher wrote in the Daily Mail: "Manuel Pellegrini and Arsene Wenger have to remember this when they prepare for the second leg of their respective Champions League ties with Barcelona and Bayern Munich. The Champions League is an obsession for all managers but an obsession cannot cloud the big picture for City and Arsenal.
"With that in mind, Pellegrini should consider not taking his key players - men such as Vincent Kompany, Sergio Aguero, Yaya Toure and Joe Hart - to the Nou Camp on March 12. Similarly, Wenger would be better served leaving his top men at home when he heads to Munich 24 hours earlier.
"As hard as that might be to hear, consider this: no team in the history of the Champions League have ever overturned a 2-0 home defeat away in the second leg."
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