Gera has played under five different managers in Gary Megson, Bryan Robson, Tony Mowbray, Roy Hodgson and now Clarke during two spells at the Hawthorns.
He said: "The club always finds good managers and I've been happy with each one but this is a different era because we are now a stable Premier League team.
"I'm sure it was difficult for the manager after Roy left but he has done a fantastic job in his first year as a number one.
"I think he has a very good future and the one thing he never does is panic. Some managers do but he always trusts in the players, which is good.
"He says the right things in the dressing room before kick-off, at half-time and after matches."