To most, Chelsea’s dominance in the Premier League title race meant they were more than worthy winners.
However, former Blues midfielder Michael Ballack believes Jose Mourinho’s side are still a work in progress as they have too many small and skilful players.
Speaking to The Guardian, the former Germany international claimed Chelsea are still missing one or two stronger players to add balance to their squad.
“When I see Nemanja Matic, a great talent, he needs a player next him to help him grow further. A team-mate with stature as well as personality.
“They have a lot of small, skilful players but sometimes they miss bigger, stronger players around them. They are probably one or two big players short of where they want to be.”
Ballack retired in 2012 at Bayer Leverkusen but lifted a Premier League title and three FA Cups during his stint at Stamford Bridge.
The 38-year-old believes if Chelsea do sign two more top quality players, they will dominate European football.
“If they bring in or develop one or two players with this talent, this attitude, this personality on the pitch, they will get back to the top in terms of European football and competing properly to win the Champions League again.”