The Manchester United manager celebrated a late winner for his side by launching a crate of water bottles at the touchline at Old Trafford.
Marouane Fellaini's strike proved to be the decisive goal in a frustrating performance for the team in the Champions League.
And, his manager clearly demonstrated his anger at the performance and relief at the three points, which secured their qualification for the next round of the competition, through the bizarre celebration.
In November 2016, Mourinho was sent off for deliberately kicking a drinks bottle into the air after during West Ham United's visit to Old Trafford.
However it is understood that the Portuguese will not receive a caution or ban for the incident against Young Boys on Tuesday.