I received a copy from a client with the following phrase: "Our current team boasts of a combined 90 man years worth of experience in the field of XYZ".
While on its own it sounds phonetically right, I am unsure if the sentence itself is grammatically right, considering the experience doesn't belong to only a single man here but man years means more than one person's experience combined together.
This brief is meant for a company website, therefore my hesitance about going with the original copy. Please help me with the correct usage of the phrase.
TIA, please excuse any mistakes. English is my second language.