Crystal Palace hold out for £35m for Jean-Philippe Mateta, Bournemouth close in on £10.4m move, and the latest on West Ham's midfielder search: TRANSFER WINDOW WATCH

The transfer window is open and here are today's developments from Daily Mail Sport's Simon Jones, including the latest on the future of Crystal Palace's Jean-Phillippe Mateta and Leeds United's hunt for reinforcements. To catch up on all yesterday's stories, click here.

Chelsea remain in talks with Rennes for £56million-rated centre back Jeremy Jacquet.

Chelsea are trying to bring the price down for the 20-year-old with their valuation closer to £45m.

Jacquet wants the move but Rennes want a record sale for the defender who is also admired by Liverpool , Arsenal and Bayern Munich .

Other Chelsea options include Bournemouth ’s Marcos Senesi and Como’s Jacobo Ramon.

Jeremy Jacquet, sliding in, remains a target for Chelsea who are trying to get his price down

Juventus are continuing talks with Crystal Palace for striker Jean Philippe-Mateta after their opening offer was rejected. Juve offered a £1.7m loan fee with £24.5m to follow on qualification for Europe. Palace want around £35m for the 28-year-old.

Marc Guehi has completed his medical and is expected to be confirmed as a Manchester City player on Monday.

Nottingham Forest have progressed in talks with Napoli for striker Lorenzo Lucca.

Forest have offered around £800,000 as a loan fee with option to buy just over £30million.

Oleksandr Zinchenko is curtailing his loan at Forest and is poised to join Ajax on loan from Arsenal. The Ukraine international has only featured 10 times this season.

Ajax have agreed a loan fee with Arsenal and Zinchenko is due for his medical on Tuesday.

Lorenzo Lucca in action for Napoli's goalless draw against Parma on Wednesday

Leeds United have discussed a move for Werder Bremen midfielder Romano Schmid but are looking at a striker next with Wolves' Jorgen Strand Larsen still a possible.

Fulham are prepared to offer around £30m for PSV Eindhoven striker Ricardo Pepi. As Daily Mail Sport reported last week, Fulham have not given up hope of signing the USA international despite him undergoing surgery on a fractured arm. They had a first offer of £22m rejected at the start of January but PSV insist it may take £35m to prise away the 23-year-old this month.

West Ham have asked about a loan deal for 22-year-old Venezuela international winger Keiber Lamadrid from Deportivo La Gueira.

West Ham and Aston Villa midfield target Quinten Timber was left out of Feyenoord’s starting team on Sunday night amid talks over his future.

The Hammers have confirmed midfielder Andy Irving, 25, has joined Sparta Prague.

Burnley are interested in Hammers midfielder James Ward-Prowse.

Quinten Timber, 24, is a midfield target for both West Ham and Aston Villa

Bournemouth will oversee a medical for Ferencvaros midfielder Alex Toth this morning after he flew into the UK late on Sunday.

Bournemouth are paying £10.4m plus add-ons for the 20-year-old.

The Cherries are advancing in talks for forward Rayan from Vasco da Gama and Lazio goalkeeper Christos Mandas.

Watford are closing in on the signing of former Roma midfielder Edoardo Bove.The 23-year-old has arrived in England and is due to undergo a medical on Monday.

Watford have offered Bove a five-and-a-half-year contract.

Manchester United midfielder Toby Collyer is poised to join Hull City on loan this week.

Middlesbrough's bid to sign Brighton winger Jeremy Sarmiento on loan has hit an impasse. The 23-year-old is currently on loan at Cremonese.

Brighton defender Diego Coppola is wanted by Fiorentina.

To catch up on all the moves and stories so far this week go to:

SUNDAY: Man United midfielder heads out on loan

SATURDAY: Chelsea step up pursuit of Ligue 1 star

FRIDAY: Man City agree five-year deal with Marc Guehi

THURSDAY: Conor Gallagher's replacement lined up at Atletico

WEDNESDAY: The latest on Federico Chiesa's Liverpool future