Found this:

[Link]

Steve Coppell's longevity in the modern (last thirty years) era sticks out like a sore thumb. Italian governments are more stable than our management.

Edited by Slimey Toad (28 Aug 2017 3.43pm)

Should we appoint DF he would be the fifth permanent Palace manager to make a return to the job since the 70's - Warnock, Coppell, Smith and Venables being the others I can think of.

If ever empirical evidence was needed to support the old adage 'never go back', this must surely be it.