Gregucci worked with Richards last season while being part of former manager Roberto Mancini's backroom team.
He told Sport Uno per Football Clan: "Richards did not have a great season last year, he had some physical problems.
"He does have fitness problems, but is capable of making a great impact.
"He has timing, strength, dynamism, is powerful, but tactically he must grow."
For breaking stories and all the great banter like us on Facebook: facebook.com/tribalfootball