Birmingham sign Armstrong
Birmingham have signed Luke Armstrong after the striker's successful trial.
The 18-year-old, son of former Middlesbrough and Ipswich hitman Alun Armstrong, has penned a one-year contract.
He was released by Boro in the summer and will link up with Alan Thompson's development squad at St Andrew's.
Boss Lee Clark said: "We've had Luke in on trial over the last few weeks and we like what we've seen so far. He'll now primarily work with our development squad."