Starlin Castro entered the big leagues with a bang, hitting a triple and home run while driving in six runs, a rookie debut record, in his first career game with the Chicago Cubs. Fans were already excited about the young, sweet-swinging shortstop, but his debut sent the fan base into a frenzy.

While Castro has appeared in three All-Star games before the age of 25, he hasn’t become the player he was supposed to be.

Here is a look at his scouting report:

“Castro covers the plate well for a young hitter and does a nice job of staying inside the ball and using the entire field. He consistently puts the barrel of the bat on the ball. … Castro’s performance has drawn him comparisons with the likes of Tony Fernandez, Edgar Renteria, Miguel Tejada—and even Derek Jeter. … Castro excels defensively as well, with range to both sides, body control and arm strength to make any play.”

Now in his sixth league in the majors, Castro has fulfilled some of the promise outlined in that 2009 Baseball Prospectus scouting report, but he has failed to fulfill others. He has shown the ability to use all fields in becoming a hits machine, but he has failed to live up to his excellent defensive potential.

The most important area in which Castro has not realized his potential is in his power hitting. Most scouting reports stated that Castro could grow into his power, hitting 20-25 home runs a year. However, his career-high home run total is just 14 and he hasn’t shown signs he’s going to exceed that by much anytime soon.

In addition, since Castro is an undisciplined hitter and doesn’t draw many walks, his on-base percentage is generally low. His inability to draw walks doesn’t seem as important when he’s hitting around .300, which has done three times (.300, .307 and .292 in 2010, 2011, 2014 respectively), but it is magnified when he’s batting below .250, which he did in 2013 and is headed toward this season.

With Addison Russell likely to push Castro from the shortstop position based on his better defensive ability, the Cubs should look to move their current shortstop. Sometimes when someone is failing to reach their potential, a change of scenery is what they need.

The Cubs know that firsthand from their acquisition of pitcher Jake Arrieta, who struggled with the Baltimore Orioles before coming to Chicago.

One problem facing the Cubs is that they may have waited too long to trade Castro. His trade value has majorly diminished and they won’t get as high of a return for him. Nonetheless, the fact that he has three All-Star appearances and nearly 1,000 hits by his 25th birthday might tempt some teams.

For the sake of the Cubs and the sake of Castro’s career, the shortstop needs to be sent elsewhere one way or the other.