Chelsea striker Diego Costa is facing up to the prospect of a retrospective punishment from the Football Association following alleged stamps on Emre Can and Martin Skrtel during last night's Capital One Cup semi-final success against Liverpool.
The 26-year-old has been pilloried for his aggressive and wholly unsportsmanlike behaviour on two separate occasions at Stamford Bridge on Tuesday evening, adding to his reputation as a filthy cheat that continues to blur the lines between what is acceptable, and what is a clear breach of football rules.
Costa has been involved in a number of unsavoury incidents in recent years. His frequent confrontations with Real Madrid defenders Pepe and Sergio Ramos during his time in La Liga with Atletico Madrid are particularly memorable.
However, the Brazilian-born Spain international hasn't exactly become a shrinking violet since completing a high-profile £32 million move to the Premier League last summer, either.
And, judging by this latest video clip -which was posted to YouTube way back in 2007 - Costa has always been a dirty player with an eye for a horrendous tackle.
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During a previous loan spell with Portuguese outfit SC Braga, an 18-year-old Costa can be clearly seen committing another horrifying challenge, this time a high-foot lunge against Benfica that connects with his opponent's knee.
Unsurprisingly, Costa pleads his innocence by raising his hands in the air and looking in the general direction of the referee while his victim repeatedly rolls around on the floor in absolute agony.
The footage is unlikely to help the marksman's increasingly bad image, even if Jose Mourinho continues to staunchly defend the under-fire frontman, claiming in last night's post-match press conference that both incidents were "absolutely accidental".
Reds boss Brendan Rodgers was much less convinced by Costa's foul play, saying: "He has this edge to him. With Emre Can, that was poor, I felt.
"He could easily hurdle over the young player and he directs his studs right on to his ankle, which could've been nasty.
"Again, the one with Martin Skrtel, there's no need to do it. That's the sad thing. He's a top-class player and he's clever enough that the officials don't see it."
Check out the old footage which shows Diego Costa up to his old tricks in the video above, and have your say in the comment box provided what a suitable punishment for the Chelsea star would be after last night's offences.