Celtic manager Ronny Deila insists Virgil van Dijk does not want to leave the Scottish Premiership leaders in January.
Celtic boss Ronny Deila says keeping his best players will take priority over acquisitions in the transfer window.
Patrick Vieira is to take over as the coach of the Manchester City elite development squad, the club have announced.
The former City, Arsenal and France midfielder has been working as football development executive at the Etihad Stadium since retiring as a player two years ago.
The move to take charge of what is effectively the City reserve team follows the departures of manager Roberto Mancini and a number of his backroom staff this week.
Attilio Lombardo, the former Italy, Sampdoria and Crystal Palace player, had been the coach primarily responsible for the EDS.
Vieira's move from an administrative position underlines his desire to move into coaching after completing his UEFA B licence last year.
The 36-year-old, who will officially take up the role on June 1, said: "After spending two years working across a number of areas of the club and with a particular focus on the youth academy, I feel honoured and privileged to have been offered this role.
"This marks a new chapter both in my career and in my life and I am looking forward to it immensely.
"My passion for the development of young talent has only grown in my time at City and I am pleased to be able to play my part in helping to shape the footballing future for Manchester City."Vieira, who is now hoping to attain his A licence, won the World Cup as a player in 1998 and the European Championship two years later among 107 international appearances.
He won nine domestic league titles including three with Arsenal, with whom he also won the FA Cup four times.
A fifth FA Cup came at the end of his career with City in 2011.
City chief executive Ferran Soriano said: "Patrick is a world champion and it is a great honour that he has chosen Manchester City to begin his football management career.
"I have seen him carefully considering options and choosing to coach for the best reasons; he has a love of the game and a willingness to continue to learn and transmit his knowledge and experience to young footballers.
"Patrick's role is of the highest long term importance for the Club.
"The ability of the Academy, the elite development squad and the first team to work together using the same football concepts is key to our success and sustainability."
Soriano's statement suggests, as had been rumoured, that the club are intending to implement the same style of play from junior sides up to the first team.
In the statement which announced Mancini's sacking on Monday, the club had also referred to a desire to "develop a holistic approach to all aspects of football at the club".
Vieira's appointment also indicates that the first-team manager will have less influence over the coaching of other parts of the club in future.
Soriano and director of football Txiki Begiristain, both former Barcelona executives, arrived at City earlier this season and the changes they intend to make are starting to become apparent.
Mancini's exit on Monday was followed by that of first-team coach David Platt, his former Sampdoria team-mate.
Defensive specialist Angelo Gregucci, Ivan Carminati, Fausto Salsano, Massimo Battara have also left along with Lombardo.
Manuel Pellegrini, who has indicated a desire to leave Malaga at the end of the season, is the firm favourite to succeed Mancini.
City are also reported to be interested in Malaga midfielder Isco, with whom Pellegrini shares an agent.