The January transfer window closes in two weeks and, so far, trading has been quiet at the top end of the market.

The top six clubs have issues to address over the final 14 days of the window, but what are the prospects of Liverpool, Manchester City, Tottenham, Chelsea, Arsenal and Manchester United adding to their squads between now and 11 p.m. GMT (6 p.m. ET) on Jan. 31?

LIVERPOOL

WINDOW SO FAR: It has been all quiet at Anfield, with the Premier League leaders having done their major business over the last two windows with big-money outlays on defender Virgil van Dijk (£75m) and goalkeeper Alisson Becker (£65m).

WHAT DO THEY NEED? Liverpool's strongest starting XI is arguably the best in the Premier League, but Jurgen Klopp lacks quality cover at centre-back and left-back. If Van Dijk or Andy Robertson are sidelined for any length of time, the lack of top-class cover could prove damaging.

OUTGOINGS: Out-of-favour striker Dominic Solanke completed a £19m move to Bournemouth, with right-back Nathaniel Clyne also sealing a loan switch to Eddie Howe's team.

DREAM SIGNING TO TRANSFORM THEIR SEASON: David Alaba -- The Bayern Munich defender could solve Liverpool's left-back issue, while he also performed at centre-back under Pep Guardiola. Would cost close to £80m, if Bayern were even prepared to sell.

New Real Madrid signing Brahim Diaz with president Florentino Perez David S. Bustamante/Soccrates/Getty Images

MAN CITY

WINDOW SO FAR: Pep Guardiola has made it clear for weeks now that City will not do business during this window, but there are issues beginning to emerge that may force the club to revisit their stance.

WHAT DO THEY NEED? City have tried and failed to find a long-term replacement for Fernandinho, with moves for Fred and Jorginho over the last 12 months resulting in the players joining Manchester United and Chelsea, respectively. At 33, Fernandinho needs to be used wisely, so experienced cover is needed. A new forward is another potential requirement, with Gabriel Jesus still to convince as Sergio Aguero's direct rival.

OUTGOINGS: Spanish forward Brahim Diaz left the Etihad for Real Madrid, with the 19-year-old having grown tired of a lack of first-team opportunities at City.

DREAM SIGNING: N'Golo Kante -- Kante would be the perfect replacement for Fernandinho, but prising him away from Chelsea is virtually impossible. However, having been moved away from his favoured role by Maurizio Sarri, has Kante become expendable?