HITC Sport understands Swansea are among several clubs eyeing Doncaster striker.
Mandeville is regarded as one of the best young emerging talents in the country after catching the eye at Doncaster so far this season.
Doncaster Rovers' Liam Mandeville
The 19-year-old has scored 10 goals in 24 games to spearhead Doncaster's bid for promotion this season and he was rewarded for his outstanding form by being named EFL Young Player of the Month for November and Professional Footballers' Association's fans' League Two player of the month.
Scouts from Premier League and Championship clubs have been flocking to the Keepmoat Stadium this season to cast an eye over Mandeville.
Doncaster Rovers Liam Mandeville scores against Exeter
Swansea have been keeping close tabs on Mandeville as they see the talented forward as one for the future at the Liberty Stadium.
Doncaster are aware of the mounting interest in Mandeville and are bracing themselves for enquiries for their prize asset during this month's transfer window.
Doncaster are keen to keep hold of Mandeville as they see him as instrumental to their bid to win promotion back to League One at the first time of asking.