Wayne Rooney would have turned Chelsea into Premier League champions, Robbie Savage has claimed.
The Manchester United star had been linked with a summer move to Stamford Bridge by various media reports.
However, Rooney remains a Manchester United player, and the England international scored his 200th goal for the Red Devils in Tuesday night's Champions League win over Bayer Leverkusen.
"Rooney was fantastic against Chelsea and even when he came on at Swansea," Savage told the Express. "And his performance against [Bayer] Leverkusen proved his dedication to United on the pitch.
"If United had sold Rooney to Chelsea then they would have been the clear favourites to win the league.
"But Jose Mourinho doesn't have the best strikers available as a result."
Mourinho eventually brought 32-year-old Cameroon international Samuel Eto'o to Stamford Bridge, while the promising Belgium international Romelu Lukaku was loaned out to Everton.
Fernando Torres and Demba Ba also remain at the club, but neither striker has enjoyed a particularly good start to the season.
As it stands, Chelsea currently sit sixth in the Premier League table, after picking up seven points from their opening matches.
Manchester United are on the same tally, as are Manchester City, who Savage rates as the favourites to win the 2013/14 Premier League title.