There are some developments which are so left-field, so unconventional, they take even the most devoted supporter by surprise.
Claudio Taffarel, a Brazilian World Cup winner and the Selecao's current goalkeeping coach, joining Liverpool as a third goalkeeping coach on Tuesday was one such event.
The 55-year-old will join current coaches John Achterberg and Jack Robinson in training the men between the sticks, and is reported to have been personally requested by No 1 star Alisson Becker - who signed a new six-year deal in the summer.
Claudio Taffarel (right) has joined Liverpool as a goalkeeping coach at Alisson's request
Alisson currently works with John Achterberg (right) and Jack Robinson (background)
Taffarel currently works with Alisson with the Brazil national team, and will now balance his commitments between the two camps, having been shown around Liverpool's training ground at Kirkby last week.
It is an unusual step. Most clubs, after all, have just one goalkeeping coach - Liverpool now have three.
Manager Jurgen Klopp explained his thinking behind the hire: 'The idea is that, in our opinion, we have now in a lot of positions the best we can imagine.
'In terms of goalkeepers, it means we have Alisson Becker, who for us is the best goalie in the world. We have Caoimhin Kelleher, who we really think is an exceptional, exceptional player.
(Right-left): Liverpool's Caoimhin Kelleher, goalkeeping coach John Achterberg, Alisson, assistant goalkeeping coach Jack Robinson, Adrian, Andy Lonergan (no longer at the club)
'We have Adrian, who has shown his qualities since he arrived here. Then we have Marcelo Pitaluga, then we have Harvey Davies, so we have five goalies in different age groups, which is great but we want to have even more of these guys.
'We want to build kind of our own philosophy in goalkeeping because we all agree it's its own game, so that's why we wanted to have another completely different view on it.'
With Taffarel, Klopp is sure to get a different view alright.
The Brazilian, who won the World Cup with his country in 1994 and was also in between the sticks for their run to the final at France 98, had a decorated playing career in which he recorded 101 caps and also won two Copa Americas.
His club career took him to Italy and Turkey as well as stints in his homeland, while he has also had two stints as Galatasaray's interim manager.
Taffarel is no stranger, either, to controversy. Throughout his playing days, he showed clear instances of a short-fuse and his eccentric nature.
While playing club football in Brazil, he lost possession outside of his penalty area and hacked down an onrushing striker, before kicking the stricken forward on the floor - he was unsurprisingly given his marching orders by the referee.
