I don't see how he doesn't bring a goalkeeper in if Henderson is moved on. Playing the way Ten Hag demands his teams play insists upon having 11 footballers on the pitch, we don't have that currently. We can't really even begin to play his style of football with De Gea given how deep he plays and while that aspect can be coached it would be against he instincts so I don't see it being successful. I'm not against moving Henderson on if we are going to replace him, and I've obviously gone into depth in other threads about how simple it would be to replace De Gea and see considerable improvements, but to move him on and bring someone like Johnstone in purely as a back-up would be completely insane.