Griffiths believes Hearts and Rangers will both be strong.
West Ham are making big moves in the transfer market, according to David Sullivan.
Kone was forced off with a thigh injury during the 3-2 win over Chelsea, but has been passed fit for Sunderland's crucial clash with Everton.
The former Aston Villa striker endured a day to forget against Watford.
Leicester City head of recruitment Steve Walsh is an influential figure at the King Power Stadium.
Bradley Dack has been linked with a move to Crystal Palace and Celtic.
Former West Ham and Newcastle United stars couldl have an unusual common career path.
The 31-year-old has been linked with Tottenham Hotspur.
West Ham United play Manchester United tomorrow night in what will be the Hammers' final game at their home of 112 years.
Kenny Jackett's men finished the season in the bottom half of the Championship.
West Ham United vice-chairman Karren Brady recently had a chance meeting with Tottenham Hotspur chairman Daniel Levy.
Tottenham Hotspur defender Jan Vertonghen could have joined Arsenal back in 2012.
Rangers teenager Myles Beerman has been hailed by former striker Gordon Dalziel.
West Ham United attacking midfielder Martin Samuelsen has been on loan at Peterborough United since January.
Pedro Caixinha's Rangers number three watched Norwich City on Monday, and may have been impressed by more than one of their players. Could an Ibrox move be on the cards?
Manchester United should consider the Leeds United defender over his Swedish compatriot Victor Lindelof.
Pedro Caixinha’s Glasgow Rangers will face Celtic in the Scottish Cup this weekend.
Anthony Martial is facing an uncertain future at Manchester United. Should Tottenham make a move for him in the summer?
Sunderland boss David Moyes has given Wahbi Khazri just five starts this season.
West Ham United failed to win against Sunderland in the Premier League last weekend.