Andoni Iraola was left frustrated after Liverpool were unable to make a triple substitution before Nottingham Forest regained the lead from the penalty spot in Saturday's 2-2 draw at Anfield.
Chelsea have completed the signing of Emiliano Martinez from Aston Villa, with the Argentina international agreeing a three-year contract at Stamford Bridge.
Anthony Elanga and Yoane Wissa netted in the second half as Newcastle United inflicted a second consecutive Premier League defeat on Tottenham Hotspur with a 2-0 victory at the Tottenham Hotspur Stadium.
Senegal defender El Hadji Malick Diouf says he is "ready to give everything" after signing a five-year contract with Brentford following his transfer from West Ham.
Newcastle have completed the signing of Nico Gonzalez from Manchester City in a deal worth 52 million pounds available in potential add-ons.
Chelsea defender Axel Disasi has joined Crystal Palace on loan for the season, giving the Premier League side another experienced option in defence under new manager Pierre Sage.