According to the source, McNabb's status depends on his pain threshold and whether anything aggravates the injury. Returning for next week's home game against the New Orleans Saints might be ambitious, but McNabb will be evaluated throughout the week.
Philadelphia's dominant performance at Carolina was tempered by concerns about McNabb, who cracked the rib during the third quarter when several defenders hit him on his 3-yard touchdown run. McNabb didn't immediately get up after the touchdown, and Eagles trainers attended to the quarterback before he eventually left the field on his own.
"Don is very resilient," said Eagles running back Brian Westbrook, who caught one of McNabb's two touchdown passes. "He heals fast."
The Associated Press contributed to this report.