Steve Walsh had identified the Algerian as a foil for Romelu Lukaku.
The Independent reported earlier this week that Jose Mourinho is increasingly confident on signing the player.
Slaven Bilic and Mauricio Pochettino both addressed links with defender during Thursday press conferences.
Spaniard has scarcely featured for Everton this season.
Koscielny signed for Arsenal from Lorient in 2010.
Rivaldo believes high-profile transfer would 'definitely help' the reigning La Liga champions.
Mauricio Pochettino insists he will not sign a replacement for Belgian defender this month.
Jagielka has fallen down the pecking order at Goodison Park.
The Brazil international started his first game since November on Wednesday.
Sanchez has scored 14 goals in the league this season.
Togo international is still in contact with Mauricio Pochettino.
Francis Coquelin and Kieran Gibbs are also back in training.
Los Blancos suffered a 2-1 defeat to Celta in in the first leg of the quarter-finals at the Santiago Bernabeu.
Former Manchester City forward has only managed five league starts this season.
French midfielder seeking return to Marseille after breakdown in relationship with Hammers.
Andy Reid think Mauricio Pochettino is doing a 'fantastic job'.
Palace have struck a deal with the Gunners and the decision now rests with the player.
Cadena Ser reports negotiations are on track.
France international has not featured for Liverpool this season.
Spanish international missed the 2-1 defeat to Celta Vigo on Wednesday night.
Former Palmeiras frontman will wear the number 33 shirt.
Serie B star Orsolini on the verge of "dream move" to La Vecchia Signora.
Stand-in captain was the hero on Wednesday night as Liverpool edged past Plymouth in a third-round replay.
Netherlands international has only scored once in the Premier League this season.
The 32-year-old 's deal had been due to expire this summer.
Silva, 22, has scored four goals in 19 league appearances for Monaco this season.
Algeria will be looking for their first win at the 2017 African Cup of Nations against Tunisia.
Reports suggest the France international is United's new priority target.
16 teams are divided into four groups for the 2017 African Cup of Nations (Afcon).
The Dutchman has long been linked with a move out of Manchester United.