No - There is no time limit specified in the laws of the game in regards to how quickly a player must leave the field when being substituted.
Law 3 The Players
3. Substitution procedure
the player being substituted:
must leave by the nearest point on the boundary line
unless the referee indicates that the player may leave directly and
Considering Transfermarkt data on Premier League since 1992, I would say that the success rate has decreased over years.
Year | Success rate (%)
1992 | 93.4
1993 | 97.6
1994 | 91.7
1995 | 94.5
1996 | 95.3
1997 | 93.4
1998 | 90.7
1999 | 97.1
2000 | 91.4
2001 | 90.4
2002 | 96.2
2003 | 95.7
2004 | 92.3
2005 | 77.0
2006 | ...
First off, a playing manager is not blind. Even on the pitch they'll see who performs and who doesn't. And they'll quite frequently communicate with their assistants.
Anyway, there are several ways of managing subs:
Halftime. 15 minutes are more than enough to talk to the team and the assistant. Upcoming subs can be discussed here already as well as under ...
The values before and after the jump are rather constant so I expect this sudden change not to be correlated to any change in player performance. This gets even clearer if you superimpose the Premier League and Bundesliga values from the original post:
The average success rate of penalty kick in the Premier League drops after 2004 to the same value as the ...
No. There is no specific time requirement.
The only requirements of the player leaving the field are that they do so by the nearest point on the boundary line (unless the referee directs otherwise) and go immediately to the technical area or the dressing room.
A player (or substitute, or substituted player) may be cautioned for delaying the restart of play....