Rory Best fears Ireland are more reliant on veteran fly-half Johnny Sexton now than they were in the run-up to the last World Cup.
Influential skipper Sexton underwent surgery on a cheekbone injury at the start of the month but is expected to be selected when Andy Farrell names his Guinness Six Nations squad on Thursday.
More than 13 years on from his Test debut, the 37-year-old Leinster player remains his country’s undisputed first-choice for the number 10 role, with this year’s autumn World Cup in France fast approaching.
Joey Carbery, Jack Carty, Ross Byrne, Harry Byrne, Billy Burns, Ciaran Frawley and Jack Crowley have each been handed opportunities to deputise during the tenure of head coach Farrell.
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