Chelsea interim boss Guus Hiddink hit out at Watford defender Juan Carlos Paredes for trying to get Diego Costa sent off in last night's goalless draw at Watford.
Watford right-back Paredes and Costa were involved in a petty exchange which saw both players booked by referee Mike Dean for their amateur dramatics.
Hiddink felt Paredes was trying to antagonise his short-tempered striker.
The Blues boss said: "It was very clear, because we were very close. It was just 10 yards from our bench.
"Paredes punched Diego in his back. After that they stumbled. Then Paredes brought his hands to his head and Diego was nowhere near his head.
"This is something we must not do. It's provocation to get someone (sent) off the pitch. Happily the referee and the assistant referee saw it."
Watford captain Troy Deeney took a dim view of the incident.
"It's new-age football," he said. "There's a little touch and everyone's rolling around. It's just handbags. In Sunday League that wouldn't happen because you'd be laughed at.
"I don't like to see it, and we'll have a word with Paredes on our side."
Hornets goalkeeper Heurelho Gomes produced an inspired performance and denied Chelsea a late victory when he kept out Costa's 88th-minute header.
The former Spurs shot-stopper said: "I believe the goalkeeper has to do things like that (make key saves). We got a point against a very good side and I was glad to make a difference.
"I believe we dominated the first-half; they are a very good side and getting better all the time. It's difficult to say (we should win) because they're below us because they're such a great side.
"We have to be competitive, it doesn't matter which team we play, we have to be competitive and that's what we're trying."
The draw wasn't a great start to Chelsea captain John Terry's long goodbye.
Terry announced at the weekend that he is not being offered a new contract at Stamford Bridge and will leave the club at the end of the season.
Chelsea, however, insist there is still a chance of him staying.
The visiting supporters made their feelings clear by repeatedly singing about captain Terry, on his 697th appearance, but their thoughts have fallen on deaf ears before.
Vocal supporter backing did little for Jose Mourinho, whose second spell came to an end in December.
But Terry can expect the fans to make their feelings clear to the club's hierarchy and owner Roman Abramovich in Sunday's clash with Manchester United at Stamford Bridge.
Terry conceded a free-kick for climbing over Deeney in the second-half. "Sign him up," chanted the Chelsea fans - expect more of that this weekend.
watford: Gomes, Paredes (Nyom 68), Prödl, Cathcart, Holebas, Capoue (Suárez 87), Watson, Jurado (Abdi 64), Behrami, Deeney, Ighalo.
Subs not used: Amrabat, Guédioura, Pantilimon, Anya.
chelsea: Courtois, Ivanovic, Zouma, Terry, Azpilicueta, Mikel, Matic (Hazard 73), Willian, Fàbregas, Oscar, Diego Costa.
Subs not used: Begovic, Baba, Traore, Kenedy, Cahill, Loftus-Cheek.
Man of the match: Gomes
Match rating: 5/10
Referee: Mike Dean