Rae believes Rangers must improve their off-pitch infrastructure if they are to move forward.
The Tottenham and Liverpool defenders, as well as West Brom veteran Jonas Olsson, have committed more errors than any other outfield player this season.
Rutten is keen to see Boetius leave Feyenoord this summer, with interest in him from Tottenham.
The Celtic winger is looking for more ahead of next season.
Manchester City, Chelsea, Arsenal and Sheffield Wednesday have had their fair share of stroppy footballers.
Manchester United hosted their city rivals in an Under-21 derby on Tuesday evening but the game was marred by fan violence.
The Manchester United loanee's current run of three goals in three games has earned him comparisons to a certain Chelsea legend.
John Terry has been ever-present in Chelsea’s title-winning campaign and Phil Jagielka has hailed him as an inspiration to older players.
The Serb could well stay on at Watford, although recent reports have linked him with both Leeds and Newcastle - among others.
The Tottenham Hotspur youngster has achieved a remarkable feat while on loan at Brentford.