Let's break this down:
The most that Minny can give him in salary over the next two years is 6783480 (120% of his salary slot). Taxes on that are about 35%. Cash into his pocket (without counting agent fees, player's association dues, etc.) is $4,409,262.
His buyout is 5.75M Euros (since it is now past June 30, and it escalated). In today's exchange rate, that is $8,078,179. MIN can pay 500k of that, leaving Rubio on the hook for $7,578,179. When he's going to make $4.4M over the next two years. Let's assume he's good enough to get a 3rd year option picked up. Now his 3-year salary will be $10,542,960, which using again the 35% tax bracket means that he will make $6,852,942. So his net NBA paycheck over three years? He has to pay $700,000 for the privilege of playing for the Timberwolves. What if he is just a whiny, sucky Euro PG? Probably will get the Ike Diogu treatment--maybe a pity vet min contract to see if something can be salvaged...now he's 22, played in the NBA for 4 years, and has not yet paid off his buyout.
OR
He stays in Barcelona another two years, makes about 700k or so. Then he comes to Minnesota (when he's still only 20), where he is GUARANTEED a profit of that two year salary of 4.4M, third year option (even Morrison got picked up for that) total of 6.5M.
For those of you in the "whiny little bitch" camp, please figure out what you're talking about, lose the hypocrisy, and try actually thinking about an opinion rather than feeling. I mean, seriously, in the span of a week people on here have decided that Rubio's a "whiny little bitch" because he doesn't want to pay 700K over the next 3 years out of his own pocket after receiving his max salary, and that Rudy should be shipped off b/c he's "whining" about playing time. Just, please, think--then post. I won't even ask you to learn the game. Just...think.