Neil Lennon 's men reportedly bid £3m for the star last season but saw their offer kiboshed by the MLS. Countryman Emilio Izaguirre confirmed the Parkhead club were looking at the player but a deal could not be reached with the American league.
Elis admitted he was frustrated that he never got a chance to speak to Celtic and is out of contract at the end of December.
He has been offered a new deal by the Texan club but the 24-year-old, who has also been linked with a move to Stoke City and Fenerbahce, has made clear he has ambitions to follow Izaguirre's footsteps and play in Europe.
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