Chelsea target Radamel Falcao produced a dismal display against Venezuela in Colombia's opening match of the 2015 Copa America on Sunday.
The 29-year-old, who endured a disastrous season-long loan with Manchester United last term, was handed a 2/10 rating from top Spanish newspaper Marca, while AS refused to even give the out-of-sorts striker a rating.
Falcao was the only Colombia player who received a rating of less than five from Marca - aside from his strike partner Carlos Bacca, who scored a three - and it didn't take long for Chelsea fans to voice their fears on Twitter after watching Jose Mourinho's top striker target in action.
Chelsea have reportedly reached an agreement with Falcao over personal terms and should complete the transfer within the forthcoming weeks if they can strike a deal with the forward's parent club AS Monaco.
The Blues are expected to sign Falcao on a season-long loan deal, with an option to complete a permanent transfer in the summer of 2016.
Mourinho believes he can help the former FC Porto and Atletico Madrid striker rediscover his best form - although, on the basis of his performance in Colombia's 1-0 defeat to Venezuela this weekend, the revered Portuguese coach has a significant challenge on his hands.
Falcao played the entire 90 minutes but touched the ball just 32 times, failing to hit a shot on target in the process.
Chelsea fans concerned
Despite his abject performance, Mourinho is expected to stick with the plan and bring Falcao to Stamford Bridge - but it's fair to say many Chelsea supporters are naturally fearing the worst.
"I'll support Falcao if he does join but you have to ask yourselves, what can he give to the team & how will he be a threat," wrote one user.
Another is concerned Falcao will prove to be nothing more than the new Fernando Torres, posting: "My fear: #CFC sign Falcao. Remy asks for transfer. Costa injuries hamstring. Falcao starts, pulls a Torres. We go back to having no [striker]"
Falcao may struggle again next season
That summed up the general mood of the Chelsea supporters, who are worried that Mourinho is about to make one of his biggest transfer mistakes since returning to the Bridge.
Falcao was an unmitigated disaster for United last season, scoring four goals in 29 appearances, with that serious knee injury he suffered in January 2014 clearly having had a negative affect on his performances.
But after a season adjusting to life in the Premier League, Mourinho is confident England's top flight will see the best of Radamel Falcao from the start of next term.
Chelsea fans: should Jose Mourinho pull the plug on the deal to sign Radamel Falcao - or will he surprise people next season? Have your say in the comments below!