Celtic could be facing one of their biggest transfer headaches of the summer after fresh developments emerged surrounding one of Brendan Rodgers’ most influential players.
With the transfer window entering its decisive stages, speculation surrounding several key Parkhead stars continues to gather pace, and supporters are becoming increasingly anxious about whether the champions can keep hold of their biggest names.
Despite opening the new Premiership campaign with victory over Dundee, uncertainty continues to surround the future of one player who has become absolutely vital to Celtic’s midfield.
Interest has been building for weeks.
Now, the race appears to have taken a major step forward.
According to Sky Sports reporter Florian Plettenberg, West Ham United have significantly intensified their pursuit of Arne Engels after already reaching a verbal agreement with the Belgian midfielder over a five-year contract.
The report claims the Hammers have already submitted two separate offers to Celtic and are now stepping up negotiations in an effort to complete the transfer before the window closes.
Engels is reportedly waiting for the two clubs to agree a fee before receiving permission to travel and complete the move.

Celtic, however, remain firm in their valuation and are believed to be demanding around £25 million before considering any sale.
The 22-year-old once again demonstrated his importance by playing the full 90 minutes in Celtic’s 1-0 Premiership victory over Dundee earlier this week.
After another outstanding campaign in Glasgow, Engels has established himself as one of the first names on Brendan Rodgers’ teamsheet.
Last season, the Belgian international contributed 10 goals and 14 assists in 52 appearances, becoming one of Celtic’s standout performers across domestic and European competition.
His ability to dictate play, drive forward with the ball and contribute in the final third has made him one of the most highly-rated midfielders in Scottish football.
Former Scotland international James McFadden has previously described Engels as a “class act”, while his consistent performances have attracted interest from clubs across Europe.
West Ham now appear determined to make him the marquee signing of their summer rebuild after generating significant funds through player sales.
Although personal terms are reportedly no longer an issue, the transfer now depends entirely on whether Celtic are prepared to soften their stance over the asking price.
With negotiations continuing and the Hammers expected to return with another improved offer, the coming days could prove decisive.
For Celtic, keeping hold of Engels would be a huge statement ahead of another title challenge.
For West Ham, landing the Belgian could become one of the standout deals of the Championship transfer window.