Kieren Fallon could be in line for a weekend comeback after extensive tests indicated the former champion jockey escaped serious injury in a fall in France last Saturday.

Worries that Coolmore's number one rider might have to face a prolonged spell on the sidelines disappeared yesterday with confirmation that no broken bones showed up in a series of scans and X-rays in Dublin on Monday.

"The X-rays and scans taken showed all-clear. It was an intensive investigation because it was one of those cases where we had to throw everything at him to see if there was a problem," said the Turf Club medical officer, Dr Walter Halley.

"I've spoken at length to Kieren and his consultant and we've agreed to review the situation in a few days. But it is possible he could be clear to come back at the weekend.

"He is very sick and sore right now but he was also very lucky it wasn't worse," Halley added.

A possible return date for Fallon could be at Tipperary on Saturday evening where the Aidan O'Brien-trained One Great Cat could appear in the Listed Danehill Dancer Tipperary Stakes over five furlongs.

"He could run in that race. But the main thing is that Kieren is okay and he will be off for only a few days," O'Brien said yesterday.

It is good news for Fallon who missed out on a first classic success of the year when he had to cry off Sunday's Irish Oaks winner Peeping Fawn just hours before the Curragh highlight.

The move came on the back of a dramatic fall in the Grand Prix de Paris at Longchamp last weekend where Fallon's mount Eagle Mountain was collided into by the eventual winners, Zambezi Sun and Stephane Pasquier.

The Irish jockey had to be stretchered from the course in a neck brace but was later released without having to visit a hospital. However the following day he complained of extensive bruising, a stiff neck and a sick stomach which ruled him out of the Curragh.

Saturday evening's incident resulted in a lengthy stewards enquiry at Longchamp which resulted in Zambezi Sun keeping the race.

However, the Arc-winning rider Pasquier was reportedly booed by a sizable contingent of the crowd when he emerged for the prize-giving celebration.

Aidan O'Brien also had news yesterday of last season's Group One winning juvenile Mount Nelson who is still in training but is some time off a first run of the season.

"It's so far, so good with him but he is a long way from a run. We haven't even picked a race for him," the champion trainer said.

Mount Nelson, winner of last year's Criterium International at Saint-Cloud last November, was the third highest-rated Irish two-year-old of 2006.

But an intended run in the 2,000 Guineas was ruled out a week before the Newmarket race and the Rock Of Gibraltaer colt has yet to race this season.

Sunday's Listed highlight at Fairyhouse will be the Belgrave Stakes over six furlongs and Kevin Prendergast has kept the option open for his high-class colt, Haatef.

The Danzig horse also has an entry in the upcoming Group Two Betfair Cup at Goodwood but his name is one of 21 remaining in the Belgrave along with the Dandy Nicholls-trained pair, Tax Free and Bahamian Pirate.

The Tipperary feature on Sunday will be the Grade Three Kevin McManus Grimes Hurdle which has attracted the joint topweights for the Guinness Galway Hurdle, Adamant Approach and Essex.

Also included among the 13 entries is the Galway Hurdle fancy Emmpat but the highest rated horse in the race is the multiple Grade One winner Al Eile.