Real Madrid and Manchester City have been in great form at home and in Europe.
The altercation happened during a training match when Rudiger delivered a late tackle to the Spanish goalkeeper.
Erling Haaland will cost any side at least Euro 150 million excluding agent fees yet it is the latter that has raised eyebrows.
West Bromwich Albion stunned 10-man Chelsea 5-2 at Stamford Bridge to hand Thomas Tuchel his first Premier League defeat.
The former Manchester United and Chelsea manager is yet to win a trophy for the North-London side.
Timo Werner missed a glit-edged chance in front of goal as the four-time world champions suffered a shock 2-1 defeat.
Brazilian centre-back Silva returns to training with the Blues ahead of their league clash against West Bromwich Albion
Chelsea's string of poor results saw them sack club legend Frank Lampard.