Boro are known to be in the market for at least one more striker, likely in the target-man mould with Rob Hulse, Dave Kitson and Marlon Harewood all thought to be under consideration.
"We've got targets in mind if people do move on, yes," said Southgate. "But there are some positions where we could lose a player without a problem, while there are others where we are a bit light.
"At the same time, if we lost Tuncay and Alves, I wouldn't necessarily replace them with the same sort of forward. We'd need to bring in the sort of player who is suitable for the division we are in."
Qatarian club Al-Ahli are locked in talks with Boro over Alves and that deal should be finalised this week, but Tuncay's future remains unclear with no firm bids - although Aston Villa and his former club Fenerbahce have been linked with a renewed interest.
BORO FIXTURES:
Saturday 15th August 2009
Swansea City v Middlesbrough 15.00
Tuesday 18th August 2009
Scunthorpe v Middlesbrough 19.45
Saturday 22nd August 2009
Middlesbrough v Doncaster 15.00
Saturday 29th August 2009
Bristol City v Middlesbrough 15.00
BORO 2009/10
MACCLESFIELD 0 BORO 3 (Arca pen, Emnes, Franks)
(1st half) Coyne, Hoyte, Huth, Williams, Grounds, Yeates, Walker, Digard, Cronesberry, Aliadiere, Martin. (2nd half) Coyne, McMahon, Bates, Hines, Johnson, Smallwood, O'Neil, Arca, Porritt, Emnes, Franks.
DUMBARTON 0 BORO 5 (O'Neil, Dunlop og, Aliadiere pen, Johnson, Williams)
Jones (Coyne 46), Hoyte (McMahon 72), Bates (Wheater 72), Huth (Hines 72), Grounds (Taylor 72), O'Neil (J Johnson 72), Arca (Capt) (Williams 72), Digard (Walker 29), Yeates (A Johnson 65), Aliadiere (Franks 46), Emnes (Porritt 63).
CARLISLE 0 BORO 2 (Johnson, Williams)
Jones (Coyne 60),McMahon,Taylor (Williams 72),Bates(Walker 24),Huth,Wheater (Hines 60),O'Neil,Arca(Hoyte 60) 60),Franks,Yeates (Porritt 72),A Johnson (Martin 84)
OLDHAM 2 BORO 2 (Williams, Huth)
Coyne; Williams, Wheater (Huth 64), Hines, A Taylor; Hoyte (McMahon 64), Walker (Yeates 54), Arca (Smallwood 79), A Johnson (Martin78); Aliadiere(J Johnson 78) Franks (Porritt 78) Substitutes (not used): Ripley
MILLWALL 1 BORO 1 (Williams)
Coyne (Jones 46), Hoyte (McMahon, 61), Huth, Wheater, Ground, Yeates, Arca (O'Neill 46), Digard (Williams, 61), Johnson, Aliadiere, Emnes (Franks, 81) Subs not used: Adan Smith, Seb Hines , Andrew Taylor, Josh Walker, Nathan Porritt Goals: Wheater OG 27mins, Williams 78m.
BORO 0 SHEFF UTD 0
Coyne, McMahon, Wheater, Huth, Grounds, Yeates,Williams, Digard (O'Neil 42), Adam Johnson, Aliadiere,Emnes (Lita 65).
Subs Not Used: Steele, Hoyte, Taylor, Arca, Franks.