The bolded part is what would stop me, and I haven't looked into it, to be honest. The only problem would be if only so-called essential travel is allowed, and would I have to quarantine in Italy. I don't mind to quarantine on the return because we're in quarantine more or less now.
As for the Sam Querrey thing, that was a strange and reckless episode, wasn't it? has there been anything heard of him since? It sets a nasty precedence. And no, I can't afford to a do a Querrey - I wouldn't be looking at Ryanair if I could!
By the way, I read that the UK lockdown rules haven't affected the WTF, which is good...