Under-fire Schalke 04 are set to sign Germany winger Sidney Sam and Fortuna Duesseldorf's goalkeeper Fabian Giefer for next season, according to a German media report on Friday.

Newspaper Bild are reporting that Bayer Leverkusen's Sam, 25, will sign a three-year contract in a transfer worth 2.5 million euros (US$3.4m), while Giefer, 23, will be given a four-year deal with Schalke at the end of the current season.

Bundesliga side Schalke have failed to settle on a regular goalkeeper since Germany's Manuel Neuer joined Bayern Munich in July 2011 and Giefer is a highly regarded prospect having risen up through Germany's junior ranks.

Sam made the last of his five appearances for Germany in last month's 1-0 win over England at Wembley.

Fifth-placed Schalke face a tough Bundesliga match on Saturday at resurgent Borussia Moenchengladbach, who have won their last five games, and the Royal Blues must beat FC Basel at home on Wednesday to reach the Champions League's knock-out phase.

Underfire coach Jens Keller has been told his position will be reviewed over Christmas after Schalke were dumped out of the German Cup with a shock 3-1 defeat at home to Hoffenheim on Tuesday.