I'm pretty confident Sucre will be sent to cause a delay, thus giving Michael more time to come up with a new escape plan. I've downloaded the episode and have watched it many times. I've watched the every episode 932843 times
The one scene that makes me believe that Sucre will be sent, is when Michael says to Sucre in the cell, " There is only one person who can stop this execution, " , he turns and looks at Sucre. Something there told me he'll be the one to do it.
And I expect Sucre to really play a much larger role with the escape in upcoming episodes.
I have a lot of ideas and theories, but I'll spare you all