* "Will" is an auxiliary verb, part of the future tense.
* "See" is the main verb.
Pronouns replace nouns (e.g., he, she, it, they). To have a pronoun, you would need a noun being replaced, such as:
* "He will see." ("He" is a pronoun replacing a specific male person).
* "They will see." ("They" is a pronoun replacing a group of people).