Conte, looking exhausted and disgruntled, said he preferred not to talk about the referee who also sent off Cesc Fabregas in the 82nd minute after the Spaniard earned a second yellow card for an ill-timed tackle on former Chelsea man Jack Cork.
There are big expectations on Morata who is tasked with leading Chelsea's attack as the London club attempt to defend the Premier League title they won in emphatic fashion last season.
"Also I have to study a new formation with 10 men, because when it happens with this regularity I must be anxious".
It was a dispiriting afternoon for Conte, who won the title in his first season at the club and wants more reinforcements.
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Guardiola, a former Barcelona and Bayern Munich manager , has yet to win a trophy since taking charge of City at the start of last season.
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His fate was likely sealed after he claimed to be "unlucky" to miss a point-after try and a field goal in the preseason opener. Although it was his only attempt, Folk's kick was two yards further than Aguayo's longest field goal in 2016.
"For sure it was a key moment, because after this red card we lost our composure and we conceded three goals", he added. Their commitment is incredible, even better than last season and I'm very happy because these players are working so hard.
The Spain global moved to Chelsea in a £58m deal from Champions League holders Real Madrid last month to bolster Antonio Conte's attacking options.
To the disgust of Conte, Burnley grabbed a third just before half time following a brilliant cross from deep by Defour as Vokes rose highest to head in.
Conte has struggled to hide his frustrations over Chelsea's failure to strengthen their squad, with Morata, Antonio Rudiger, Tiemoue Bakayoko and back-up goalkeeper Willy Caballero their only new signings. At the moment I signed a new contract, and then I made a decision to stay, I chose to work for this club, and then to try to give every day 120 per cent. For example, when I was with Juventus I did not score more than 20 goals.
Fabregas and Cahill will be suspended for Chelsea's tough second match of the season, away to Tottenham at Wembley Stadium next weekend.