if aquaman does not step up his game until the end of the season and there is noone better available for CM then i think a pirlo with reduced wages would be an OK deal, if we take him to get a shorttime fix until we get someone younger with quality.
the point that aquaman has 5 years or more in him may sound sensible, but i'd prefer 2 years of proven quality (pirlo) over 5 years of inconsistent, invisible performances of someone who probably will get injured the next day and miss half the season.