Holloway admitted he was sorry the £15m England winger, who was bought and loaned back in January, will never get to work with the Red Devils boss.
"I feel pretty sad real, it's the end of an era," he said "For Wilf as well as I'm sure he wanted one or two seasons with him. The best manager in my lifetime has suddenly stopped.
"I had a chat with Wilf and I'm sure when it all settles down, they will be in touch. I'll have a little word with him again today. He goes down as Sir Alex Ferguson's last ever signing - it's not a bad one."