Romelu Lukaku's move to Manchester United from Everton has sparked the transfer window to life with the Belgium forward choosing Old Trafford over a much-anticipated deal with Chelsea.
The Lukaku deal -- which could rise to as much as £90 million -- combined with Manchester City's failure to fend off Paris Saint-Germain's late swoop for Dani Alves, has shown that a transfer can take a sudden, unexpected turn at the final moment.
But with almost two months of trading to go, several deals still hang in the balance, so which ones are most likely to get over the line and which are doomed to fail?
TIEMOUE BAKAYOKO
Another player at the centre of a Chelsea-Manchester United tussle, but Antonio Conte looks likely to win the race for the Monaco midfielder. The 22-year-old will cost around £40m, but United have cooled their interest, so Chelsea should get this one done.
Deal Prospect: 9/10
ERIC DIER
Manchester United believe they can negotiate a deal with Tottenham for the England international, but it will take an offer in excess of £50m for Spurs to even consider doing business. Jose Mourinho sees the versatile 23-year-old as the perfective foil for Paul Pogba in a defensive midfield role.
Deal Prospect: 7/10
KELECHI IHEANACHO
Leicester City are close to wrapping up a £25m deal for the Manchester City striker. West Ham had been front-runners to sign the Nigeria international, but Leicester now lead the race and are attempting to finalise a transfer in the coming days.
Deal Prospect: 9/10
NABY KEITA
The RB Leipzig midfielder is Jurgen Klopp's top summer target at Liverpool, but the German outfit have insisted that they will not sell the Guinea international. Liverpool believe Keita wants to move to Anfield, so expect a renewed push to sign the 22-year-old.
Deal Prospect: 7/10
THOMAS LEMAR
Arsene Wenger has admitted his interest in the Monaco forward, who can play in all three positions across the front line. Arsenal have had bids of £30m and £40m rejected by Monaco, but another move is likely for the 21-year-old.
Deal Prospect: 8/10
NEMANJA MATIC
Jose Mourinho has made a defensive midfielder a priority acquisition, but Man United are now chasing Dier due to doubts that Chelsea will sell Matic in the wake of the Lukaku transfer. If Dier does not happen, United will return for Matic, but the deal is looking less likely.
Deal Prospect: 4/10
KYLIAN MBAPPE
The hottest property in world football right now, but Monaco are fighting hard to keep the 18-year-old forward. Arsenal, Liverpool and Manchester City are all on Mbappe's trail, but if he goes anywhere, Real Madrid is his most likely destination. But can they find the £130m it will take to sign him?
Deal Prospect: 6/10
BENJAMIN MENDY
Manchester City have been pursuing Mendy all summer, but have yet to conclude a deal for the Monaco defender. After missing out on Dani Alves, though, they will pull out all the stops to secure the left-back. And Mendy himself has given a clear hint he could be headed for the Premier League.
Deal Prospect: 8/10
IVAN PERISIC
Manchester United are refusing to meet Inter Milan's €55m price tag for the Croatia winger, but the former Borussia Dortmund star is keen to move to Old Trafford and negotiations are underway in an effort to reach a compromise on the fee.
Deal Prospect: 8/10
ALEXIS SANCHEZ
Manchester City lead the chase for the Arsenal forward, but the Gunners are ready to hold the Chilean to the final year of his contract. Sanchez wants to leave, so there may be turbulence ahead, but Arsenal are in a determined mood and do not need to sell.
Deal Prospect: 5/10
WESLEY SNEIJDER
Los Angeles FC, the MLS expansion team, lead the chase to sign the Galatasaray midfielder. Sampdoria have offered the former Inter Milan star a return to Italy, but the 33-year-old favours a move to the US.
Deal Prospect: 8/10
VIRGIL VAN DIJK
Southampton hold all the aces with Van Dijk after securing the Dutchman to a six-year contract in 2016. Liverpool suddenly dropped their interest last month after appearing to have beaten Chelsea to his signature, but while the deal looks off right now, August might see a resurrection of their interest.
Deal Prospect: 5/10
KYLE WALKER
Pep Guardiola had hoped to have Dani Alves and Walker vying for the right-back spot, but with Alves snubbing City, a deal for England full-back Walker is now a priority. Tottenham are ready to demand at least £50m for the 27-year-old, which is more than City want to pay.
Deal Prospect: 7/10