A date with Real Madrid on the horizon will not distract Schalke from Bundesliga duties, head coach Jens Keller said.
Schalke are into the last-16 of the UEFA Champions League but, prior to their European clash, they must negotiate a home league fixture with seventh-placed Mainz.
Keller's side occupy a Champions League qualifying spot for next season as it stands, as they sit in fourth - four points clear of fifth side Wolfsburg.
Four straight wins has Schalke sitting pretty in the German league but Keller warned Mainz's unpredictability could be their undoing.
"Well Mainz is capable of playing different systems during a game and switching between them," he said.
"They are quite aggressive with the ball, and very compact as a team. With (Nicolai) Mueller, they have a very quick player for an offensive game, so is (Shinji) Okazaki.
"They deserve (to be) where they currently are. They do have plenty of quality as a team. That's what makes them dangerous for us."
Keller said the last-16 first leg with Madrid on Wednesday was out of the players' heads, with the league fixture their first priority.
"Our team is focused solely on the match against Mainz on Friday, that's what counts, that's courtesy of the current situation in the table," Keller said.
"The team knows how the situation will be, if we beat them.
"Right now, Madrid is not an issue at all, I have made it clear to my team as well.
"I feel that the guys are sharing my point of view and focusing completely on Mainz.
"On Saturday you can start talk about Madrid but not now."
Schalke will host the first 90 minutes against Madrid, before heading to the Bernabeu on March 18 for the second leg.
|Coach: J. Keller|
for M. Meyer 65'
for L. Goretzka 81'
for K. Huntelaar 88'
|Rodgers: Balotelli may have to get used to bench|
|Lallana: I was trying too hard|
|Pardew braced for Old Trafford test|
|Adriano announces Le Havre deal|
|Song to face ´brother from another mother´ Fabregas|
|Walker juggles music, football careers in Sweden|
|Lescott unfazed by City reunion|
|Tskhadadze appointed Georgia coach|
|United to finish top three - Ferdinand|
|Allardyce: Stamford Bridge stalemate saved my job|
|Southampton need three January signings, says Watson|
|Liverpool can make Champions League, says fanzine editor|
|Walsh: Hull clash crucial for Leicester|
|Toure, Aubameyang and Enyeama make shortlist for African gong|
|Docherty backs Chelsea to win two-horse race|
|Liverpool could benefit from Hyypia influence - Scales|
|Saudi Arabia name Asian Cup squad|
|Forty-year-old Cahill no problem for Postecoglou|
|Wenger criticism baffles Redknapp|
|Leicester must strengthen in window - Walsh|
|United not title contenders - Docherty|
|Koeman: Southampton youngsters will get a chance|
|Dyche empathises with Liverpool striker crisis|
|Cagliari turn to Zola|
|Rooney thanks Van Gaal for Christmas break|
|Cruzeiro offer Paulinho Tottenham exit chance|
|Carlisle´s wife grateful to Burnley|
|Katebe called up to Zambia AFCON squad|
|Cape Verde name AFCON squad|
|Finke names much-changed Cameroon squad|
|Grant omits World Cup troublemakers for AFCON|
|Blackpool striker Ranger goes AWOL|
|Allardyce relishing Mourinho meeting|
|Ashley fails to increase Rangers stake|
|Crystal Palace v Southampton: Koeman calls for focus|
|Warnock targeting striker in January|
|Chelsea v West Ham: Adrian vows visitors will attack|
|Heskey signs short-term deal at Bolton|
|Everton v Stoke City: Martinez eyes strong form|
|Juninho defends David Luiz|
|Burnley v Liverpool: Dyche defends Rodgers ahead of Turf Moor test|
|Arsenal v QPR: Wenger eyes festive momentum|
|Liverpool are growing in confidence, says Rodgers|
|Redknapp: Austin future could depend on survival|
|Martinez wants Everton consistency|
|Barca want Neymar until 2020, says agent|
|Jones undeterred by pressure of Liverpool starting role|
|Allardyce ´knows how to beat managers´ - Carroll|
|Jones playing for a new contract|
|China select Evergrande spine for Asian Cup|
|A-League Preview: Koren tips City to build|
|Khedira keen to fight for Real spot|