Rosenior made two crucial mistakes that cost Chelsea against PSG, and this is not the first time

Chelsea suffered a crushing 5-2 loss against Paris Saint-Germain in France , leaving the Blues with a mountain to climb at Stamford Bridge.
Chelsea went down twice in their first-leg round of 16 Champions League clash, but found their way back into the game, only to lose the plot late on.
The West London outfit started making mistakes, and PSG punished them severely, running Liam Rosenior’s side ragged in the dying embers.
The Chelsea manager was at fault for the capitulation at the Parc des Princes.
First, his insistence on playing out from the back under intense pressure forced Filip Jorgensen into the mistake that led to Vitinha’s goal, making it 3-2.
Rosenior’s demands of his goalkeeper are notably difficult, as seen in Strasbourg, and the Blues paid the price for this particular tactic.
Then came the biggest mistake. On 83, Rosenior took off his two biggest goal threats in Cole Palmer and Joao Pedro.
The Pedro decision was shocking as he had just started getting into the game, even scoring a well-taken goal before it was ruled out rightly for an offside.
On came Liam Delap, whose biggest contributions were shanking a shot and getting flagged for offside.
Perhaps Palmer did not have his best game, but Chelsea needed his attacking threat. Bringing on Romeo Lavia in his stead proved destructive.
With Chelsea barely threatening following the inexplicable decision to remove their two most dangerous players, PSG poured forward.
Rosenior has enjoyed a decent start to his tenure at Chelsea , but the jury is still out on the Englishman and his tactics.
Yesterday was not the first time that his decision-making has cost the Conference League champions .
Chelsea have lost all the high-profile games they have played under the 41-year-old so far.
It is hard to exactly pinpoint one area where the Club World Cup champions have improved since they dismissed Enzo Maresca for Rosenior.
They have crashed out of the League Cup under Rosenior. They could be out of the Champions League soon.
If Chelsea do not qualify for next season’s Champions League, serious questions need to be asked of his credentials.