Fulham and Juventus scouts saw Lens' Ligue 2 win over Chateauroux on Monday amid claims in France that the clubs were watching midfielder Cheick Doucoure.
Manchester United are being linked with a double move for James Maddison and Jadon Sancho at the end of the season.
Sheffield United are among a clutch of Premier League and Championship clubs monitoring Motherwell's teenage targetman James Scott.
Christmas has come early for Norwich fans with the form of Teemu Pukki boosting City's survival hopes, but sources in Finland believe bids will be made for him.
West Ham scouted some potential targets for the next transfer window on Sunday when their official saw Porto's 3-2 win over Portimonense in the Algarve.
Tottenham are ready to offer Christian Eriksen as part of a swap deal for Juventus star Paulo Dybala in January, reports have claimed.