City are a great team messi backs guardiola for success

I think there may be some confusion here!

"City" likely refers to Manchester City, a professional football club in England. And "Messi" is Lionel Messi, a renowned Argentine professional footballer who has played for FC Barcelona and the Argentina national team.

As for "backs Guardiola for success", I assume you mean that Messi is supporting Pep Guardiola, a Spanish professional football manager who has managed several clubs, including FC Barcelona and Manchester City.

So, to clarify, the statement "City are a great team Messi backs Guardiola for success" can be broken down as follows:

So, the statement is essentially saying that Lionel Messi, a legendary footballer, is supporting Pep Guardiola, a successful football manager, and his team, Manchester City.