Manchester United risk losing Patrice Evra and Rio Ferdinand after deciding not to renew their contracts before a new manager is appointed.

The two defenders' deals expire in the summer, as does that of interim manager, but sources told ESPN that their futures will not be resolved until United have found David Moyes' successor.

United are aware that the delay and the uncertainty could cost them the services of Evra and Ferdinand but are comfortable with the situation.

Giggs, 40, could also decide to retire and United are conscious that the situation with all three players is out of their hands.

Centre-back Ferdinand, a 2002 signing from Leeds, said earlier this month that he wants to carry on playing next season and his preference would be to stay at United.

Left-back Evra, who joined from Monaco in 2006, has been linked with Monaco and Inter Milan and is expected to attract offers.