The 34-year-old caused quite a stir last week when he posted a cryptic message on his Instagram account, just a few days after his West Ham exclusion.
A number of supporters assumed it was in relation to his absence at the London Stadium, however Casilla hit back – claiming it was purely about personal matters.
He said: “Honestly, there are people with very boring lives. I have not said anything bad about the club or my situation.
"They are personal things, nothing to do with Leeds. #mot”.
Indeed, it still raises questions about the former Real Madrid’s man future at Elland Road, especially now he is playing second fiddle to Illan Meslier.
Should Casilla leave this summer, former Whites defender Danny Mills believes the club will target an experienced replacement.
He told Football Insider: “Maybe a keeper coming towards the end of his career like (Nigel) Martyn who accepts he isn’t going to play week in, week out but is still a good professional, is going to train hard, push the number one goalkeeper to improve them day in, day out.
“You get that good balance so if you do need somebody to step in you’ve got good experience and it’s not a problem.
“And it’s good for a young goalkeeper to learn their trade that way.”
Meanwhile, Hibernian striker Ethan Laidlaw spent last week on trial at Thorp Arch, according to the Daily Record.
The 16-year-old striker signed his first professional contract with Hibs in February having joined their academy at the age of 10.
Laidlaw is described as an “agile, quick and skillful attacking player” as he attracts interest from clubs across the Premier League:
Here are the latest transfer headlines from Leeds, including a possible managerial approach, and their Premier League rivals:

1. Eriksen happy at Inter
Former Tottenham Hotspur star Christian Eriksen, who was linked with a Premier League return in January, says he is now happy at Serie A side Inter Milan. (Sky Sports Italia, via Football Italia) Photo: Alessandro Sabattini

2. McInnes shock contender for Blades job
Former Aberdeen boss Derek McInnes has emerged as a shock contender for the Sheffield United job. Eddie Howe, Frank Lampard and Slaven Bilic are also being considered. (Scottish Sun) Photo: Ian MacNicol

3. Barca close in on Aguero deal
Barcelona are close to agreeing a two-year contract with Manchester City striker Sergio Aguero with teammate Eric Garcia also set to move to the Nou Camp in the near future. (Diario AS via Daily Mirror) Photo: Gareth Copley

4. Man City make Mendes approach
Man City have approached Sporting Lisbon over Nuno Mendes in a bid to initiate negotiations. The 18-year-old is also being eyed by Liverpool, Manchester United, Real Madrid and Juventus. (AS via Daily Mail) Photo: Carlos Rodrigues

5. Sanchez 'earmarked' by Man Utd
Manchester United have earmarked Burnley’s Nick Pope and Brighton and Hove Albion goalkeeper Robert Sanchez as potential signings, if David de Gea leaves Old Trafford this summer. (Daily Star) Photo: NEIL HALL

6. Solskjaer eyes £60m in player sales
Ole Gunnar Solskjaer hopes to raise £60million in player sales this summer after being handed a modest budget of around £80m. Solskjaer wants to sign a centre-back, a right winger, a defensive midfielder and a centre forward. (Metro) Photo: OLI SCARFF


