Robbie

The central defender who stops attackers, wins headers, and organizes the back line. Now they also need to be comfortable with the ball, play out under pressure, and read the game to intercept. Great partnerships matter: Ferdinand-Vidić, Puyol-Piqué, Van Dijk-Matip. The job has changed because possession football needs centre-backs who can pass, not just defend.

A wide player in a back-three or back-five system who covers the entire flank. More attacking responsibility than a regular full-back - basically a full-back and winger combined. When defending, you're part of a back five. When attacking, you're up providing width. You need serious stamina because you're covering the whole touchline both ways.

A long diagonal ball from one side of the pitch to the other, usually to find space where the defense hasn't shifted yet. When play is congested on one flank, the other side is often open. A good switch of play exploits that. The pass needs weight and accuracy - too short and it gets cut out, too long and it goes out. Full-backs and playmakers who can hit these passes are valuable for stretching the game.

Changing the starting lineup between matches to manage player workloads or adapt to opponents. Guardiola rotates heavily and takes criticism when it backfires in big games. Other managers stick with their best eleven until players drop from exhaustion. The packed modern calendar means rotation is necessary, but fans hate seeing their favourites benched for important matches.

A three-player move. The first player passes to the second, and the third times a run to receive the lay-off in space. Defenders watch the ball and the immediate receiver, so the third player sneaks away unnoticed. Getting the timing right takes practice and understanding between players. It's a sign of a well-drilled attacking unit when you see it happen smoothly.