Watford boss Walter Mazzarri has told "good friends" Jose Holebas and Etienne Capoue to keep on arguing to get the best out of each other.
Holebas fired a smart winner in Sunday's 1-0 Premier League victory at Middlesbrough, then spent several minutes bickering with Capoue at full-time.
Hornets manager Mazzari remains relaxed about that Riverside Stadium row, insisting his players will only hit their peaks by continuing to question themselves and each other.
"Even in training they usually play on the same side, so they are always both talking to each other and trying to improve each other," said Mazzari.