Newcastle United defender Fabricio Coloccini got injured while training with the squad last week.
The Argentine defender damaged his foot while training in La Manga, with the rest of the Magpies’ first-team squad.
And while Newcastle are monitoring his progress, as he looks to make it off the treatment table, McClaren fears that the 33-year-old will be sidelined for his side’s next two matches against Stoke City and AFC Bournemouth.
“Colo is extremely doubtful for the next two games but we are assessing him day-by-day after a calf injury,” McClaren said at his press conference today.
Coloccini’s injury comes at the worst possible time for Newcastle, as his regular partner, Chancel Mbemba, is also on the treatment table.
It leaves the Magpies’ options very short at the back, with Steven Taylor and Jamaal Lascelles likely to start at centre-back.
Newcastle did not sign a central defender in the January transfer window, despite investing elsewhere, and that decision is now appearing to be a poor one.
McClaren will also have to decide which of his players will wear the captain’s armband, with Coloccini out injured.
Jonjo Shelvey captained the Newcastle team for a friendly against Lillestrom, while they were out training in Spain last week, and he looks the most likely candidate to take over from Coloccini.