Unfortunately for them, it's a deal they may end up regretting at the end of the day.
There is no doubt that Barea is a nice player and is a good team and chemistry guy, but being that effective role player on a talented, veteran team such as Dallas is one thing. Doing it on a young, likely less talented team like Minnesota is something different altogether.
Barea will join a backcourt rotation that features youngster Ricky Rubio, but he could be asked to do much more offensively.
Throughout his NBA career to date Barea has averaged 7.1 points and 2.9 assists per game. He should become more of a focal point with the Timberwolves would likely hope to see a big increase in both of those numbers.
He's a scorer, so an increase there could be likely, but in the long run how much can Barea really give the Wolves during the course of his contract? He's the typical guy that can help a contending team off the bench and give them a lift, but how does he impact a team likely to have its struggles?
While a good scorer, he isn't a real good shooter. He's a decent pick-and-roll guy that can get to the lane, but without the talent surrounding him, teams can play him a little different defensively. That means he will likely be forced to take that jump shot a lot.
Defensively, he's shown that he can be beaten easily off the dribble as well. Where young teams struggle the most is at the defensive end of the floor and before long, Barea could become a liability.
Overall, he's a good role player that can be very streaky offensively. Unfortunately, he may have to be more than that in Minnesota and eventually they may regret it.