Manchester United and Newcastle are reportedly pursuing Crystal Palace youngster Nathaniel Clyne.
The 20-year-old defender continues to impress with numerous composed displays in the Npower Championship and is said to be attracting plenty of interest from the top flight.
According to the Daily Mail, Sir Alex Ferguson was alerted to the talents of Clyne during United's shock defeat to Palace at Old Trafford in the quarter-final of the Carling Cup.
Along with United, Newcastle are also reported to be keen on the England under-21 international who, with his contract set to expire in the summer, could leave Selhurst Park in January.
It is claimed that United have identified Clyne as a possible long-term replacement for Old Trafford legend Gary Neville, who retired last season.
Meanwhile, Newcastle boss Alan Pardew is keen bring in reinforcements at full-back due to the uncertain contract of situation of Toon defender Danny Simpson.