Complex sentence: Colin Todd departed from Middlesbrough after their failure to succeed in the playoffs, being replaced by Lennie Lawrence who called time on nine years with Charlton Athletic, who appointed Alan Curbishley and Steve Gritt as joint player-managers.
Split into simpler sentences: Colin Todd departed from Middlesbrough after their failure to succeed in the play-offs. He was replaced by Lennie Lawrence, who ended nine years with Charlton Athletic, who appointed Alan Curbishley and Steve Gritt as joint player-managers.