Who sits when Vladimir Sobotka returns?

Vladimir Sobotka's leg is almost fully recovered. The versatile St. Louis forward has been on the shelf ever since he suffered a broken kneecap on January 14th. Now that he's nearing a return to the lineup, the Blues will have to make a difficult roster decision. 

When Sobotka returns, who sits?

It's a great problem to have. When Sobotka is cleared to play, the Blues will have to make the difficult decision of deciding who will receive some time as a health scratch. Such is life when you have depth. 

Chris Porter will be sent down. That's a pretty obvious move to make, but deciding who will sit in the press box isn't as easy. Ryan Reaves and Magnus Paajarvi are likely candidates, but both have been playing well and have plenty to offer on a nightly basis. Reaves is the muscle, Paajarvi is the speed. 

The likely answer is that the Blues will rotate who sits and who plays. Reaves will probably see some time as a healthy scratch when the lineup needs a bit more of an offensive punch. Paajarvi should remain in the lineup considering how well he has played, but he may see some time off if he cools.

Other players who may see some time off are Brenden Morrow, Max Lapierre and even Derek Roy. It'd be wise to rest some of the Blues regulars as the team inches closer to the postseason, but for the interim it'd make sense for the Blues to keep their hot hands active and bench those who either need a rest or who are cooling offensively.  

Who should sit?