Conversation so far:
What was St Mirren in relation to Alex Ferguson?
St Mirren have the distinction of being the only club ever to sack Alex Ferguson.
What does it mean by sack Ferguson?
To sack Alex Ferguson means to fire him.
How was Alex Ferguson wrongfully dismissed from St Mirren?

Question: What other breaches of contract did he make
Self-contained rewrite: What other breaches of contract did Ferguson make?