The 49-year-old moved to London in the summer of 2009 after eight seasons in Milan where his major successes were two Champions League victories and one Serie A title.
Christophe joined Chelsea in November 2007 from Rennes, where he had previously worked with Petr Cech.
He had been at the French club since 1999, in which time he has taken care of a host of top class goalkeepers. As well as cech, he mentored French international Michaël Landreau, Andreas Isaksson, Christophe Revault and Patrice Luzi, formerly of Liverpool.
His time there has coincided with the club's best ever period, regularly battling for European football at the top end of the French league. When he joined the club, he began working in the Academy, but quickly rose up the ladder to work with the first team, where he met a young Cech during the 2003/4 season.
Much like Avram Grant, Christophe never played at the top level, although as a youth, he would train once a week with Nantes, where he occasionally got to share a training pitch with future Chelsea players Marcel Desailly and Didier Deschamps.
Realising that his path in football lay with coaching, at the age of 24, he gave up the amateur game and became a coach with Ancenis near Nantes.
His role there was to build an academy, and he eventually achieved success that led to Rennes offering him a post.
Goalkeeping has long been his love, choosing the position as a child because of the individuality of the strip, and the ability to use hands as well as feet.
Christophe is renowned in his homeland for his qualities of hard work, attention to detail and communication, and all at Chelsea welcome him to his new role.
The post of goalkeeper coach became available after Silvino Louro left the club with José Mourinho.
Michael Emenalobecame well acquainted with Avram Grant when a player at Maccabi Tel-Aviv where Grant was manager.
That was between 1998 and 2000, the tail end of a playing career for the now 42-year-old who became a Nigerian international in 1985.
A defender, he moved to the United States in 1986 where he graduated from Boston University three years later with a degree in international relations with political sciences, having also played college soccer.
His football career continued in Belgium and Germany before a short spell in England at Notts County in the mid 1990s with whom he won the Anglo-Italian Cup at Wembley.
Michael then returned to the States where he played in the first ever MLS game for San Jose Clash.
After one season, it was back to Europe and a year in the Spanish second division with Llieda, managed by current Sevilla coach Juande Ramos. Then came the move to Israel.
Michael won 14 caps for Nigeria in total and played in the 1994 World Cup in the USA, missing the first game through injury but then playing against Argentina and Greece before he was knocked out by a Roberto Baggio-inspired Italy.
After hanging up his boots, Michael has spent time coaching in America.
At the start of the 2005/6 season, Mick moved up to work with the first team squad after ten years in charge of the reserves.
His first Chelsea job was in 1990 - nine months looking after the youth team having previously coached West Ham's first team.
He moved on to coach and then manage Ipswich before returning to Chelsea and his long spell of service with our second string.
As a player, Newcastle-born Mick played with Sunderland and West Ham, the latter signing him to replace England's World Cup winning captain Bobby Moore.
As a Chelsea coach, he has played his part in developing the current England captain, as well as many other youngsters who have grown into first team players throughout the divisions.
Continues with his previous roles relating to the Reserves and Academy but now also takes on responsibilities relating to the co-ordination of first team activity and supporting the first team manager.
Dermot Drummy was appointed youth team manager on a permanent basis in January having taken the role on an interim basis following Paul Clement's promotion to reserve team manager in November.
Neil joined the Chelsea schoolboys coaching staff part-time in 1993 and has worked his way up.
In 2002 he was appointed assistant academy director with a responsibility for the Under 8-16 age group and in the summer of 2004, he took charge of the Academy.
A Chelsea supporter, he is the prominent figure in Sky One's Football Icon talent search, run in conjunction with Chelsea Football Club.
Chelsea's computer man, James measures our own team's performances and helps assess and dissect opponents, producing videos for the manager's requirements.
