What predictions does Odysseus' guide make to Odysseus?

Its not his guide, but a prophet makes some predictions to Odysseus.

The Theban prophet Tiresias (The person you reffered to as 'guide'), reveals that Poseidon is punishing the Achaeans for blinding his son Polyphemus.

He then foretells or predicts Odysseus's fate- That he will return home, reclaim his wife and palace from the wretched suitors, and then make another trip to a distant land to appease Poseidon.

He warns Odysseus not to touch the flocks of the Sun when he reaches the land of Thrinacia; otherwise, he won't return home without suffering much more hardship and losing all of his crew.