Money no object, who would you sign this January for your club to build a team around?The chances are you're going to pick at least one player on today's quiz. These are the top-rated footballers on Earth under 23 years old – at least according to Transfermarkt's heady algorithms –and we want you to name every single one.These are the stars that you won't believe are only the age they are. Destined to be on the Ballon D'Or podiums of tomorrow, should Cristiano Ronaldo ever hang up his boots.There are some obvious ones on the list – hello England squad hopefuls – and some less visible stars. But if you're intoFootball Manageror you're halfway through aFIFAcareer, you've already sent your scouts to check up on this lot, right?You've got 10 whole minutes: piece of cake.Let us know how you get on@FourFourTwo– we’ll retweet the best efforts, sochallengesome friends as well. Good luck!THEN TRYQuiz! Can you name the top three all-time goalscorers for every current Premier League club? NOW READ...TARGET5 things you should know about Manchester United, Tottenham and Barcelona target Krzysztof PiatekQUIZCan you name every Euros semi-final and final host city?GUIDEPremier League live stream best VPN: how to watch every game from anywhere in the worldWhile you’re here, why not take advantage of our brilliant subscribers’ offer? Get the game’s greatest stories and best journalism direct to your door for only £10.25 every three months – that’s just £3.15 per issue! Save money with a Direct Debit todayMore time-killing quizzes on FourFourTwo.com