Speaking ahead of Chelsea's Premier League opener away at Fulham on Monday night, Alonso underlined how the newcomer's Italian tactical upbringing set him apart.
Highlighting Palestra's multifaceted skill set, Alonso said: "I would say it's probably unusual in England because, in Italy for example, it's quite common, and he has had this education in Italian football to play both profiles. It doesn't matter if you are right-footed or left-footed, just that you are versatile. So he has this option, this energy. He's something different, maybe not that common here, but in Italy it's quite common."
Regarding the defender's early integration at Cobham, the Spanish manager added: "He's had a great impact as well in the changing room. He's integrated really well. He's a great guy and with this freshness that he has brought, apart from his football qualities, he's a very great addition to the club."