Tuesday's transfer gossip column, via BBC News, brings a fresh round of speculation involving Europe's biggest clubs.
Arsenal and Manchester United are both said to be monitoring Porto defender Alberto Costa, according to the report.
Elsewhere, Manchester City are reportedly determined not to sell Erling Haaland on the cheap even in the unlikely scenario of relegation, suggesting the club would demand full value for their prize striker regardless of circumstance.
Liverpool are also understood to still hold an interest in Real Madrid midfielder Aurelien Tchouameni, keeping alive talk of a potential move for the France international down the line.
As ever with this stage of the rumour mill, none of these links point to advanced negotiations, but they underline the scale of interest swirling around some of the continent's most sought-after talents heading into the coming windows.