Mark Schwarzer was a fine goalkeeper in his prime.
The Australian twice made European finals, coming one game from glory with Middlesbrough and Fulham, before picking up back-to-back Premier League winners' medals without playing a single league game for Chelsea and Leicester City in their victorious seasons.
He was a solid choice as a pundit on Match of the Day, and offered some insight on goalkeeping and set-piece defending when he joined former Cottagers teammate Danny Murphy on the sofa.
But one of Schwarzer's comments wasn't quite as well-received as the rest.

With a number of Premier League goalkeepers impressing over the last seven days - not least
Hugo Lloris and Kasper Schmeichel during their respective sides' Champions League outings - the subject of the best number one in the league was raised.
Schwarzer opted for Petr Čech - someone who certainly has laid claim to that honour in the past, but a goalkeeper who plenty of rivals' fans don't seem to think should even be part of the conversation.
https://twitter.com/Alex94_mufc/status/789959527374417920
https://twitter.com/LieutenantSloth/status/789957964174073856
https://twitter.com/NeeksSports/status/790131960303714304
https://twitter.com/D9Jordan/status/790118089132310528
https://twitter.com/MatthewBolton89/status/790095736096559104
Now, those of you with decent memories may recall that Schwarzer doesn't seem to be the biggest David de Gea fan out there.
The 44-year-old was quizzed on the Spaniard's abilities earlier this year on BT Sport's 'Fletch & Sav' show, and
was less than complimentary.
Still, there's probably a bit of a difference between rating De Gea below Manuel Neuer - the best in the world in some people's opinion - and giving Čech the upper hand.
You know what they say, though. Football is a game of opinions.
In the latest GAA Hour, we talk to Ken McGrath of Waterford and with Declan Brennan about a new club players' association.