You've got to commend him for not even attempting to hide his intent.
Pablo Martel, manager of Argentinian outfit Club Atletico Union Santiago has really crossed a line, both literally and figuratively.
Martel lost the plot during a recent game and decided to take his frustration out on a member of the opposition. A winger made a darting run down the flank when the manager wandered out of his technical area to viciously take the player out.
https://www.youtube.com/watch?v=ji8AFIrYLZ4
This sort of behaviour from coaches is, of course, utterly reprehensible... most of the time.
Sometimes it is justifiable.
https://www.youtube.com/watch?v=-5ts7iw7sC0
Hat-tip to Bleacher Report