Colombia are facing the prospect of being without James Rodriguez for their World Cup last-16 tie against England on Tuesday evening.
The Bayern Munich midfielder has been struggling with a calf injury since before the tournament began and is a major doubt to miss the game against England.
Rodriguez started on the bench for Colombias first group match against Japan, while in the 1-0 win over Senegal last Thursday, the midfielder was forced off after just 31 minutes.
Rodriguez did not join in with the rest of his teammates for Colombias training session on Monday and was doing light stretches on the sidelines instead.
According to reports, Colombia manager Jose Pekerman was using his favoured 4-2-3-1 system in training with Wilmar Barrios alongside Carlos Sanchez in central midfield.
Mateus Uribe would be given licence to push further forward but the majority of Colombias creativity will be provided by Juan Quintero in the absence of Rodriguez.
Pekerman has no dilemmas in defence as all of his first-choice options are fit, while Radamel Falcao will spearhead the attack.
From the bench, Pekerman has both Luis Muriel and Carlos Bacca to call upon if he needs to change his attack, but both players have barely featured in the tournament so far.
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