Peter Kennaugh has withdrawn from Team Sky's nine-man Giro d'Italia squad, leaving team-mate Ben Swift as the only British rider in the race.
"I'm feeling better but I'm behind on where I wanted to be. The plan is to be competing in a few weeks," he said.
Chris Sutton has been drafted in for the race, which starts on Friday.
The three-week race begins with three stages in Northern Ireland and Republic of Ireland before heading to Italy.
Team Sky squad in full:
Dario Cataldo (Ita), Edvald Boasson Hagen (Nor), Philip Deignan (Ire), Bernhard Eisel (Aut), Sebastian Henao (Col), Chris Sutton (Aus), Salvatore Puccio (Ita), Kanstantsin Siutsou (Blr), Ben Swift (GB).