Siem de Jong played 45 minutes for Newcastle Under 21s on his comeback from a collapsed lung. The 26-year-old made way at the break after coming through the first half of United's 2-0 defeat to Derby County at St James' Park. De Jong has made just one Premier League start since his £6million arrival from Ajax last summer. Newcastle midfielder Siem de Jong played 45 minutes for Peter Beardsley's Under 21 side on Wednesday . Farrend Rawson (third from right) is congratulated by his team-mates after scoring at St James' Park . He tore his thigh muscle in September and was days away from returning in February when, for the second time in two years, he suffered a collapsed lung and underwent surgery. De Jong was expected to miss the remainder of the season but now has an outside chance of featuring in the final six matches. However, on the evidence of a subdued half against the Rams, Sunday's visit of Spurs will almost certainly come too soon. Newcastle striker Adam Armstrong (right) is pulled back by Derby's Max Lowe . Armstrong (left) heads a cross towards Derby's goal but his effort flies wide of the post . Meanwhile, forgotten man Facundo Ferreyra replaced De Jong at the break. The 24-year-old Argentinian striker arrived on a season-long loan from Shakhtar Donetsk last summer but is yet to make his senior debut having been plagued by a string of injuries. Derby's victory arrived courtesy of second-half goals from Alefe Santos and Farrend Rawson.
Siem de Jong has made just one Premier League start this season .
The 26-year-old has been plagued by injuries since joining from Ajax .
He played 45 minutes as Newcastle lost 2-0 at home to Derby County .
Loanee Facundo Ferreyra replaced De Jong at half-time .
Alefe Santos and Farrend Rawson on target for the Rams at St James' Park .