Birmingham City have signed Manchester City striker Keyendrah Simmonds on a two-and-a-half-year deal and Southampton defender Yan Valery on loan until the end of the season.
Frenchman Valery, 21, has made 37 Premier League appearances for Saints.
Meanwhile, 20-year-old Blues striker Miguel Fernandez has joined Spanish third-tier side CD Guijuelo on loan until the end of the season.
Find all the latest football transfers on our dedicated page.