Al Kazeem among Champion eight
Al Kazeem and Declaration Of War are provisionally in line for a rematch at Leopardstown on Saturday.
Both horses were among the eight declared on Thursday morning for the Red Mills Irish Champion Stakes.
The former had been due to bypass the Group One over a mile and a quarter in favour of a trip to France on Sunday week, but the prospect of rain in Ireland has prompted a rethink.
Trainer Roger Charlton tweeted: "Al Kazeem has been declared to run in the Irish Champion Stakes at Leopardstown on Saturday, let's hope the rain arrives as predicted."
Al Kazeem suffered his first defeat of the season when beaten into third by Declaration Of War in the Juddmonte International at York last month.
While Leopardstown officials would love to host a second encounter between the pair, clerk of the course Lorcan Wyer admits it would appear "unlikely" as both horses prefer different conditions.
"We're not sure exactly how much (rain the track will get), but they are talking from Friday midnight through to the early part of Saturday. We are maybe looking at 15 or 20 millimetres of rain," he told At The Races.
"If the rain comes, looking on the positive side, 20mm is not coming in the space of an hour and a half, it's 20mm over a sustained period of time, maybe two or three millimetres per hour.
"If that's the case, the track is in fabulous condition and is well able to take that volume of rain.
"To give a guide to how it may go, I'd say it may be no worse than yielding or good to soft, but that's an estimated guess.
"Unfortunately, it may be slow enough for Al Kazeem, but if it's slow enough for him, it will be too slow for Declaration Of War.
"We would love to have them all here, but that's unlikely."
Declaration Of War's trainer, Aidan O'Brien, has also declared Kingsbarns in the eight-strong field.
The three-year-old son of Galileo is a particularly intriguing entry as he has not been sighted since winning the Racing Post Trophy at Doncaster as a juvenile.
Joseph O'Brien is due to partner Declaration Of War, with Seamie Heffernan poised to receive the leg-up aboard Kingsbarns.
British interest is further spiked by the presence of The Fugue, who was a laughably easy winner of the Darley Yorkshire Oaks last month.
Trainer John Gosden will, however, be closely monitoring how much rain falls at Leopardstown as the four-year-old filly has so far reserved her best form for fast ground.
Irish Derby winner Trading Leather, trained by Jim Bolger, was runner-up in the Juddmonte International and has his seventh start of what has already been a profitable term. Bolger will also be represented by Parish Hall.
The Dermot Weld-trained Princess Highway and Euphrasia, from John Murphy's yard, complete the octet.