Released West Ham United midfielder Jack Collison is training with Birmingham City.
The Birmingham Mail says Lee Clark knows Collison's agent and has invited the 25-year-old Welsh international midfielder to keep fit while Blues have a look at him.
"When there is a player like Jack Collison on the open market, he is a terrific footballer, obviously there's going to be interest," said Clark.
It remains an informal, temporary mutually beneficial arrangement for both parties at the moment.
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