The correct future tense form of 'poner' for 'Yo' is 'pondré.'
The correct future tense form of the verb 'poner' in the sentence 'Yo (poner) el libro en la mesa' is:
In this sentence, 'poner' in the future tense for the subject 'Yo' (I) becomes 'pondré,' which means 'I will put.' This form matches with the subject 'Yo' (I) placing the book on the table in the future.