With the January transfer window in full swing, we take a look at four of the biggest transfer stories involving Premier League clubs that are doing the rounds today.

Southampton targeting Matty Cash

According to Sky Sports, Southampton have joined AC Milan in the race to sign Nottingham Forest wide man Matty Cash. Saints are keen to sign a full-back this month while restoring their reputation for developing young, British talent and the 22-year-old ticks both boxes.

Cash, who has also operated as a winger at times throughout his career, has impressed in the Championship this season with two goals and four assists to his name while averaging the fifth-most tackles per match of any player in the division.

Likely linked to Cedric Soares' contract entering its final six months, Saints are also said to be interested in Tottenham right-back Kyle Walker-Peters and Fulham left-back Joe Bryan.

Leeds see Che Adams offer rejected

In more Southampton news, Sky Sports are also reporting that the Premier League side have rejected a third bid from Leeds for striker Che Adams. The 23-year-old moved to St. Mary's from Birmingham City during the summer, having netted 22 Championship goals last season, but is still awaiting his first goal in the Premier League.

Nonetheless, Leeds' hopes of replacing Eddie Nketiah with Adams, following the youngster's return to Arsenal, have not gone to plan with a third offer now turned down. Leeds want a loan-to-buy deal that would ultimately see them pay £20m for Adams if they're promoted to the Premier League but that offer has not taken Southampton's fancy.

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Chelsea could swoop for Nick Pope

According to Dean Smith of Bleacher Report, Chelsea are considering selling goalkeeper Kepa at the end of the season, with Burnley's Nick Pope mooted as a potential replacement. The Blues signed the Spaniard two summers ago for a world-record fee for a goalkeeper, but whether he's proved good value remains open to debate.

Pope, meanwhile, has made 29 more saves and kept two more clean sheets than his Blues counterpart this season, and looks set to be included in Gareth Southgate's England squad for Euro 2020. He's also under contract until 2023 with the option of a further year, so Burnley would be under no obligation to sell him for cheap.

Jorge Mendes discusses Man United target Bruno Fernandes

Super agent Jorge Mendes has been discussing the future of one of his clients - in-demand attacking midfielder Bruno Fernandes. The Portugal international has eight goals and seven assists in the Portuguese top flight this season and has been strongly linked with a move to Manchester United.

However, Mendes - known for representing Cristiano Ronaldo, Jose Mourinho and for working closely with Wolves - has suggested Fernandes may not be on the move this month, albeit admitting that he won't be a Sporting Lisbon player next season.

As quoted by Mirror Football, he said: "If he doesn't leave now, he will leave for sure in the summer because Sporting have already spoken with other clubs. Something will happen but I am not sure if now or at the end of the season."