Originally published at: https://www.67hailhail.com/opinion/16-time-winner-mikael-lustig-has-to-be-considered-celtics-best-free-transfer-signing-of-last-10-years/
Signing players on a free transfer, or pre-contract agreement, are often hit-and-miss affairs. There is no guarantee that the player is going to be a success, but on the plus side if the player does well they can be moved on for big money in the future. We are going to look at some of…