Manchester United legend Gary Neville says Chelsea's dominance this season has come from their summer market work.
Neville believes it is those recent additions to the squad that have elevated Chelsea to a level above their rivals.
Speaking to Sky Sports 1's Monday Night Football, Neville said: "The recruitment of Jose Mourinho since he has come into Chelsea has been outstanding. Absolutely outstanding.
"He's identified what a team needs. Matic - straight in. Courtois - they brought him back. (Diego) Costa - a strong centre forward. Fabregas - they needed a little bit of creativity at times last season against teams that played with deep defences.
"The blend of what Chelsea have at the moment is why they will be fighting for the league with (Manchester) City, and why those two are streets ahead of everyone else."