How niche can you go?

1. 1Name a player who played for this club and one of his.
2. 2Any answer that fits holds.
3. 3The rarer the answer, the better the card.

Four steps a day, one go at each.

1. 1Each link is a club both players played for.
2. 2Fill each gap with a player who fits its clue.
3. 3Seal it once. The chain holds or it breaks.