Knows the Old Firm rivalry
Playing for Celtic, albeit only 23 senior appearances in total, Murphy knows at first hand the bitter rivalry between the Hoops and Rangers.
With Caixinha bringing in nine signings, seven are from overseas and will have little knowledge of how much the Old Firm battles mean to fans and all those involved with both clubs.
That could see the signing of Murphy prove to be just as important on the pitch as it is off of it, as Caixinha needs to add players to his side who understand not only Scottish football, but the Old Firm rivalry too.