"The man stops him."
Translation:הגבר עוצר אותו.
i came here in a multiple choice, and the only right answer was:
- האיש עוצר אותו.
Must have been fixed.
that would indeed be wrong. יעצור is the future tense.
See following url for full paradigm: http://www.pealim.com/dict/1542-laatzor/#h-IMPF-3ms