U.S Women’s national team boss Hayes, who took over from Beard as Chelsea manager in 2012, wrote on Instagram: "Can't quite compute this. Absolutely one of the best humans. Always available for a chat, one of the good guys. A champion in the women's game and a top bloke. So gutted for his family."
England striker Russo also said: "Warmest guy with the biggest heart."
Aston Villa forward Rachel Daly added: "Absolutely heartbreaking. A truly special man with a heart of gold. RIP Beardy."
Arsenal and Canada attacker Olivia Smith, who played under Beard at Liverpool, wrote: "Wouldn't be where I am without you."