Trainer Henry de Bromhead admits Sprinter Sacre's participation at the Punchestown Festival could have a bearing on which race Sizing Europe contests.
The 11-year-old was no match for Nicky Henderson's incredible stable star in the Queen Mother Champion Chase at Cheltenham last month, finishing a well-beaten second.
Sprinter Sacre has since bolted up at Aintree and Henderson has suggested his charge could finish off his spectacular season in Punchestown's Champion Chase on 23 April.
However, the trainer will be keeping an eye on conditions at the Co Kildare venue, before making a final decision on whether the seven-year-old will take his chance.
Sizing Europe could avoid a rematch by stepping up in distance for the Punchestown Gold Cup a day later, although conditions would have to be right.
Asked whether Sprinter Sacre's participation would have an impact on Sizing Europe's plans, De Bromhead said: "I'm sure it will, but the ground will be a big factor as well.
"If the ground comes up heavy, we'll probably be forced to run in the two-mile race, as we don't want a slog in heavy ground over three miles.
"He's in great form and we're hoping to run him in Punchestown, but I don't know which race we'll go for yet.
"I need to speak with Alan and Ann (Potts, owners) and see what the weather does."