Not looking for an argument, but it wasn’t all his belongings they went after. Just very high end watches and jewellery - and this article appears to have been written based solely on social media pics posted by Grealish:
https://iflwatches.com/blogs/celebrities/football-player-jack-grealish-watch-collection
The watches mentioned at the link above alone are worth £400-500k (although given they’re stolen and on some kind of register now, I doubt they’d actually fetch that). I assume he has more than what’s listed in that article too. All you’ve got to do then is work out where he lives, then jackpot?
A lot of gangs go after really high end watches - Mahrez had a load stolen, Frank Lampard has been targeted multiple times and had a load of Pateks stolen. Sterling and Delle Ali have had significant watch collections stolen too. Watches and jewellery are small, light and easy to spirit out of the country. Which is why they’re targeted like this. I read somewhere about gangs flying in from South America to carry out these thefts then flying straight back out, but I’m struggling to find the source now (although Vanity Fair has a similar article except the break ins are in the USA.)
You don’t have to look too far into Grealish’s socials to see he has a significant watch collection knocking around his gaff (he’s not the only one, Jesse Lingard and others have pretty nice collections too.)
I think it’s happening more and more nowadays as brands like Patek, Richard Mille and Rolex are increasingly trendy. And watches are a lot easier to steal and conceal than say… a Ferrari, or other high ticket items a footballer might buy.
Fwiw, if I was on £100k+ a week I’d be hiring one or two full time security guards to look after my family, my house and my stuff. Shouldn’t have to be that way, but here we are!