MIDDLESBROUGH striker Andraz Sporar has yet to arrive at Rockliffe but is due back later this week to undergo fitness tests on a hamstring injury he picked up whilst on international duty with Slovenia.

The 27-year-old was forced to sit out their World Cup qualifying game against Cyprus having pulled up in the warm-up.

Sporar has scored three goals in 12 appearances since arriving on loan from Sporting Lisbon for the season and has been a regular fixture in the side.

Boro will also monitor the fitness of Paddy McNair after he was forced to pull out of Northern Ireland’s World Cup qualifier against Italy.

McNair, 26, picked up a knock last Friday in their 1-0 win over Lithuania and subsequently missed the goalless draw against the European Champions.

McNair is now back at Rockliffe and will be monitored by the club’s medical staff ahead of this weekend’s game against Millwall, which will be Chris Wilder’s first in charge of the club.

However, the club are awaiting the arrival of Sporar where they will be hopeful he will be fit enough for the game at the Riverside Stadium.

Wilder has been in training with his new players since last Monday after signing a two-year-a-half year contract following the dismissal of Neil Warnock.