Rangers manager Alex McLeish has handed former Manchester United defender David May the chance to resurrect his career.
May fell down the pecking order at Old Trafford and was released at the end of the season but McLeish has now offered him a trial.
Former Sunderland centre-half Emerson Thome has also been offered a trial with the Glasgow club.
Rangers assistant manager Andy Watson said: "It's no secret that we are looking for some cover in the centre half position and that's why the two lads are here.
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"We will have a look at them all of this week and maybe next week in Germany and take it from there."
McLeish is also believed to be lining up a bid to take Manchester United youngster Michael Stewart on loan for next season.
PA