Sizing John could come back in trip to two miles at Leopardstown over Christmas.
The 2017 Cheltenham Gold Cup hero has not been seen in racecourse action since last December - but could have a gallop after racing at Punchestown next weekend.
Trainer Jessica Harrington told At The Races on Sunday: "Kate (Harrington) rode him this morning. Very much so (shows old ability), he really does - and just might surprise you by going over two miles at Christmas."
The eight-year-old was due to return at Navan last month, but that was delayed due to a wind procedure.
He finished well beaten in the Leopardstown Christmas Chase and was unable to defend his Cheltenham crown in March due to a fractured pelvis.
